Remove welcome project duplicate fix

Clean up welcomeProjectsFixed code - Issue #2823
Add placeholder menu when running native menu unit tests.
Keyboard shortcut for open folder
more robust filename checking
updated comment
Merge pull request #12 from edge/bchin/merge-Brackets-master

merging latest Brackets (Sprint 26) master
remove unused local vars and redundant var
Merge branch 'master' into jeff/validate-win-filenames
rtc: move and reorder, added unit test
make apostrophe lass fancy (#3976)
Fix the buttons order in the Install with URL dialog
fix italian
undo/resubmit italian
Don't provide hints in string literals
fixes issue #4050
update usage of new Dialogs API: done() does not chain, command handlers should return a promise.
update not yet translated version of Italian page to current English page
Merge pull request #4101 from eztierney/issue-4050

Don't provide hints in string literals
Backend changes to check extension update needs.

Exposing ALREADY_INSTALLED state to the UI.

completely handles the case of an already installed extension the installation of which
is canceled at confirmation time.

Install extension dialog handles NEEDS_UPDATE case and also passes
along the installed extension information to the caller.

Extension Manager now displays update mark and allows undo.

Checkpointing frontend work for installing update

Supports installation of updates.
Fixed language manager unit test. Issue #3957
Removed phtml file extension.