Allow use of OS X and Windows color picker without freezing Sublime Text

This is a pretty hack-y approach, but it seems to work on OS X 10.9 (with Sublime Text 3) and Windows 7 with Sublime Text 2 and 3.

It may not work at all on Sublime Text 2 or 3 on Linux, however, I haven't been able to test it.

It also allows you to move throughout the file from which the dialog was spawned, in case you want to change the insertion point. It uses a DLL on windows to allow you to actually interact with sublime text while the dialog is up, as it would otherwise not be possible, as the dialog box disables its parent window before being completely initialized.

Should at least partially fix #26 and completely fix #16