Remove garbage whitespace introduced by cron PR
Use POST for contentactions.

Fixes #973.
ReferenceError: confirmExit is not defined
http://host.d64/bolt-public/view/js/bolt.js
Line 178

Editing any content
Merge pull request #1012 from rixbeck/master

ReferenceError: confirmExit is not defined
Merge pull request #1009 from GawainLynch/hotfix/whitespace

Remove garbage whitespace introduced by cron PR
Whitespace
Added JSONAccess extension
Filter file uploads by extension
Turned off colored output in the default phpunit config.

Not everything supports color (e.g. `watch` doesn't); you can always
enable color using phpunit --color, but you can't disable colored output
this way, and phpunit isn't smart enough to detect whether its stdout
understands color escapes.
A unit test for the getExtension function. Just because.
JSONAccess 5.3 compat