Fix #414

Given that conflicting function names may vary between versions of MongoDB,
it is much saner to use the more explicit getCollection() syntax instead of
trying to enumerate all exceptions.
Merge pull request #527 from stennie/issue-414

Fix #414: View documents fail if collection name is "group"
Fixes #408
 - use standard "New" shortcuts to open new connections
 - use standard "Open" shortcuts to open .js files
 - update shortcuts.txt with current shortcuts
Merge pull request #560 from stennie/issue-408

Fixes #408
Fixes #519: Full screen mode not working on OS X
 - changed fullscreen shortcut to Cmd/Ctrl+F11
Merge pull request #563 from stennie/issue-519

Fixes #519: Full screen mode not working on OS X
Fixes #449
 - Line numbers in JSON views can be toggled with Ctrl+F11 on OS X
Merge pull request #565 from stennie/issue-449

Fixes #449: Add line numbers to JSON editing window (OS X)