Added smart indent and auto close tags as preferences.
Add proxy support for extension installation.

Configurable via a "proxy" preference (which could be used for other parts of
Brackets that should use HTTP proxy).

This fixes #6241, #5958 and [this backlog item](https://trello.com/c/SEV95fdK/902-support-for-a-proxy-in-extensions-installation)
Provide syntax highlighting for ASP.NET User Controls (.ascx files).
Fixes: indentTabs -> indentTags
Update strings.js
Update strings.js

fix ru version
Merge pull request #6888 from adobe/tom/new-editor-prefs

Added smart indent and auto close tags as preferences
Merge pull request #6921 from mohammadyaghobi/patch-1

Update strings.js
Merge pull request #6914 from smockle/master

Provide syntax highlighting for ASP.NET User Controls (.ascx files).
Merge pull request #6924 from wpt/patch-1

Update strings.js
Merge pull request #6911 from adobe/dangoor/extman-proxy

Add proxy support for extension installation.