Allow friend collection names to store arbitrary plain text
Fixes #5083 removes messages sent by deleted user
put test in to prevent deleting messages from everyone in case no guid - should never happen
Fixes #5302 - Automatically registers view to simplecache on elgg_get_simplecache_url call
Merge pull request #5303 from Srokap/ticket_5302

Fixes #5302 - Automatically registers view to simplecache on elgg_get_simplecache_url call
Fixes #5304 handling metadata arrays in search for user profile data
Merge pull request #494 from mrclay/fc-plaintext

Allow friend collection names to store arbitrary plain text
Merge pull request #5300 from cash/remove_private_messages

Fixes #5083: Remove private messages sent by deleted user