Remove welcome project duplicate fix

Clean up welcomeProjectsFixed code - Issue #2823
Keyboard shortcut for open folder
more robust filename checking
updated comment
remove unused local vars and redundant var
Merge branch 'master' into jeff/validate-win-filenames
rtc: move and reorder, added unit test
Synchronized the menu sections with the current menus
Always listen for sidebar resize.
Fix for Issue #3942: [quick edit] in HTML file, quick editor shows function found from other file, not one in current file

The Jump-To-Definition part of the search was finding the function in the .html file, but
the following part of the search -- the old QuickEdit search -- only looked in .js files.
Check for 'N' in save dialog even if focus is on a button
need to check when moveNextToken() fails
Added clarifying comment
Merge pull request #4134 from adobe/nj/issue-4109

Check for 'N' in save dialog even if focus is on a button
Merge pull request #3317 from albertxing/albertxing/2823

Remove welcome project duplicate fix
Merge pull request #4112 from TomMalbran/tom/issue-4023

Fix #4023: MenuSection object is out of sync with current Brackets Menus
Merge pull request #3972 from Chigurh/OpenFolder

[OPEN] Keyboard shortcut for open folder
Add string for download of an update
Updated by ALF automation.
Merge pull request #4140 from adobe/dangoor/update-string

Add string for download of an update