[gh-820] Add 'last updated' column to mysites list
[gh-820] Remove debug statement
[gh-820] Make the mysites table sortable using the existing unl_sites_sort()
[gh-820] Don't double up on the use of 'access' for 'last_update'

Keep them separate for clarity since they represent two different values
Merge pull request #822 from ericras/issue-820

Closes #820
Merge pull request #826 from ericras/develop

Closes #825
Upgrade Drupal Core to 7.25
Upgrade Drupal Core to 7.26. @1h00
Update tims submodule @0h20
Add basic instructions for upgrading Drupal Core

@spam38 provided these quick instructions on how upgrades are performed.
Merge pull request #831 from tsteiner/drupal-7.25

Upgrade Drupal Core to 7.26
Merge pull request #830 from tsteiner/update-tims

Syntax highlighting - codemirror - doesn't work for TIMS