fixed organization list on org index. issue #373.
added phony validation to organization phone number. Fixes #378.
updated jquery data tables to latest version.
fixed user roles on organization edit. Added tests. Fixes #379.
changed user edit screen to use the users organization roles in the roles dropdown. Fixes #377. Added test for updating roles.
Merge pull request #39 from postcode/bug_fixes

Bug fixes from HSA testing.