Error-reporting command

Add error-reporting command that should be used in a similar manner as feature-usage-tracking command. The difference is that during installation, the exceptions tracking will be enabled without prompt (keep current behavior that we are tracking exceptions). It can be disabled later by using `$ tns error-reporting disable`.
Refactor analytics-service in order to "hide" some methods from the interface and to simplify adding of new analytics commands and variables.

**Rename feature-usage-tracking to usage-reporting**

Author: rosen-vladimirov

docs/man_pages/general/autocomplete-disable.md

@@ -16,7 +16,8 @@ Command | Description
 [autocomplete](autocomplete.html) | Asks for confirmation if command line autocompletion should be enabled for bash and zsh.
 [autocomplete-status](autocomplete-status.html) | Prints the current status of your command-line completion settings.
 [autocomplete-enable](autocomplete-enable.html) | Configures your current command-line completion settings.
-[feature-usage-tracking](feature-usage-tracking.html) | Configures anonymous usage statistics tracking for the NativeScript command-line interface.
+[usage-reporting](usage-reporting.html) | Configures anonymous usage reporting for the NativeScript CLI.
+[error-reporting](error-reporting.html) | Configures anonymous error reporting for the NativeScript CLI.
 [help](help.html) | Lists the available commands or shows information about the selected command.
 [doctor](doctor.html) | Checks your system for configuration problems which might prevent the NativeScript CLI from working properly.
 <% } %>

docs/man_pages/general/autocomplete-enable.md

@@ -16,7 +16,8 @@ Command | Description
 [autocomplete](autocomplete.html) | Asks for confirmation if command line autocompletion should be enabled for bash and zsh.
 [autocomplete-status](autocomplete-status.html) | Prints the current status of your command-line completion settings.
 [autocomplete-disable](autocomplete-disable.html) | Disables command-line completion for bash and zsh shells.
-[feature-usage-tracking](feature-usage-tracking.html) | Configures anonymous usage statistics tracking for the NativeScript command-line interface.
+[usage-reporting](usage-reporting.html) | Configures anonymous usage reporting for the NativeScript CLI.
+[error-reporting](error-reporting.html) | Configures anonymous error reporting for the NativeScript CLI.
 [help](help.html) | Lists the available commands or shows information about the selected command.
 [doctor](doctor.html) | Checks your system for configuration problems which might prevent the NativeScript CLI from working properly.
 <% } %>

docs/man_pages/general/autocomplete-status.md

@@ -15,7 +15,8 @@ Command | Description
 [autocomplete](autocomplete.html) | Prints your current command-line completion settings. If disabled, prompts you to enable it.
 [autocomplete-enable](autocomplete-enable.html) | Configures your current command-line completion settings.
 [autocomplete-disable](autocomplete-disable.html) | Disables command-line completion for bash and zsh shells.
-[feature-usage-tracking](feature-usage-tracking.html) | Configures anonymous usage statistics tracking for the NativeScript command-line interface.
+[usage-reporting](usage-reporting.html) | Configures anonymous usage reporting for the NativeScript CLI.
+[error-reporting](error-reporting.html) | Configures anonymous error reporting for the NativeScript CLI.
 [help](help.html) | Lists the available commands or shows information about the selected command.
 [doctor](doctor.html) | Checks your system for configuration problems which might prevent the NativeScript CLI from working properly.
 <% } %>

docs/man_pages/general/autocomplete.md

@@ -26,6 +26,7 @@ Command | Description
 [autocomplete-status](autocomplete-status.html) | Prints the current status of your command-line completion settings.
 [autocomplete-enable](autocomplete-enable.html) | Configures your current command-line completion settings.
 [autocomplete-disable](autocomplete-disable.html) | Disables command-line completion for bash and zsh shells.
-[feature-usage-tracking](feature-usage-tracking.html) | Configures anonymous usage statistics tracking for the NativeScript command-line interface.
+[usage-reporting](usage-reporting.html) | Configures anonymous usage reporting for the NativeScript CLI.
+[error-reporting](error-reporting.html) | Configures anonymous error reporting for the NativeScript CLI.
 [doctor](doctor.html) | Checks your system for configuration problems which might prevent the NativeScript CLI from working properly.
 <% } %>

docs/man_pages/general/doctor.md

@@ -12,7 +12,8 @@ Checks your system for configuration problems which might prevent the NativeScri
 
 Command | Description
 ----------|----------
-[feature-usage-tracking](feature-usage-tracking.html) | Configures anonymous usage statistics tracking for the NativeScript CLI.
+[usage-reporting](usage-reporting.html) | Configures anonymous usage reporting for the NativeScript CLI.
+[error-reporting](error-reporting.html) | Configures anonymous error reporting for the NativeScript CLI.
 [autocomplete](autocomplete.html) | Prints your current command-line completion settings. If disabled, prompts you to enable it.
 [help](help.html) | Lists the available commands or shows information about the selected command.
 <% } %>

docs/man_pages/general/error-reporting.md

@@ -0,0 +1,29 @@
+error-reporting
+==========
+
+Usage | Synopsis
+------|-------
+General | `$ tns error-reporting [<Command>]`
+
+Configures anonymous error reporting for the NativeScript CLI.
+
+All data gathered is used strictly for improving the product and will never be used to identify or contact you.
+
+### Attributes
+`<Command>` extends the `error-reporting` command. You can set the following values for this attribute.
+* `status` - Shows the current configuration for anonymous error reporting for the NativeScript CLI.
+* `enable` - Enables anonymous error reporting.
+* `disable` - Disables anonymous error reporting.
+
+<% if(isHtml) { %> 
+### Related Commands
+
+Command | Description
+----------|----------
+[usage-reporting](usage-reporting.html) | Configures anonymous usage reporting for the NativeScript CLI.
+[autocomplete](autocomplete.html) | Enables command-line completion for bash and zsh shells.
+[autocomplete-status](autocomplete-status.html) | Prints the current status of your command-line completion settings.
+[autocomplete-enable](autocomplete-enable.html) | Enables command-line completion for bash and zsh shells.
+[autocomplete-disable](autocomplete-disable.html) | Disables command-line completion for bash and zsh shells.
+[doctor](doctor.html) | Checks your system for configuration problems which might prevent the NativeScript CLI from working properly.
+<% } %>