Fixed some issues with the timedatepicker functionality.  In particular time zones are no loger hard coded.
Removed inintended warn
Update default_achievements.axp

Fixed some spelling errors
Modified datetimepicker so that it doesn't constrain what people can type.
Merge pull request #144 from goehle/datetimefix

I took another look at everything and had a friend do some testing.  Everything looks OK so I'll merge.
Backported fix for Visible/Reduced Credit Enabled checkboxes always being marked.
Fixed bug 2708 by commenting out tikz option
Merge pull request #148 from goehle/hotfixes

Backport fixes
Fixed a bug where Scrubber was eating <'s  (2760)

Fixed incorrect text when viewing a problem via the library
Removing scrubber
Fixed mssing my
Merge pull request #151 from goehle/hotfixes

Scrubber Bug