Elgg 1.7.8 released

It's not all 1.8 and GSoC for us! This weekend Cash bore down and attacked the 1.7 bugs, producing Elgg 1.7.8, the latest release in the stable Elgg branch.  1.7.8 contains important security enhancements and bugfixes. All network owners are encouraged to upgrade.

Security Enhancements:

• Properly encoding search queries (Thanks to lord epsylon (of Lorea) for the report!)

Bugfixes:

• Blogs - Fixed disappearing blog draft issue.
• Groups - Editing a topic from discussion list page works now. 
• Search - Group names used in titles. 
• InviteFriends - Invitation link no longer shows up when logged out. 
• Messages - Denormalized the message calculation for better performance. 
• Sorting by time_created in relationship functions supported. 
• Metadata and annotation names can now be updated. 
• Fixed error with deleting a user with disabled entities. 
• Removed unnecessary executable permissions on a number of files. (Thanks to pauloortiz for the report!)