Remove the ability to switch language to the current language

The "Restart brackets" button will be disabled if you select the current
lang in the "Switch Language" dialog.

Tested on Windows 8 with Brackets 0.32 master c05cfd5
Fixed indent
Don't allow drag-and-drop of files/folders when a modal dialog is showing.
Update main.js

Thanks for the tip ;)
use precise=false for performance when parsing unchanging code
performance: do not use precise token parsing
Merge remote-tracking branch 'origin/master' into randy/issue-5003
Revert "Merge pull request #3406 from WebsiteDeveloper/Issue-1617"

This reverts commit 2d350a5305beec1d282f700bf9d2b360e19a76a7, reversing
changes made to d7fa08d20533766f77609c9969f3976500786fb0.
Merge pull request #5415 from adobe/dangoor/5412-enter-key-breakage

Fixes 5412 (enter key broken in code hints)
Merge pull request #5395 from adobe/randy/issue-5003

Use precise=false for performance when parsing unchanging code
Merge pull request #5313 from adobe/rlim/no-drop-on-modal

Don't allow drag-and-drop of files/folders when a modal dialog is showing.
Merge pull request #5287 from SAPlayer/patch-5

Remove the ability to switch language to the current language
Merge remote-tracking branch 'upstream/master'