Merge pull request #4 from beck24/master

1.8 polishing
Removes classes which have been subsumed into Elgg 1.8
Refactors diggs code slightly to be more OO
Removes back to plugins link
Alphabetized js/css registration
Removes run_once functions
Uses more standard Elgg markup for plugin settings area
Removing subtypes on plugin deactivate
Implements much nicer profiles for plugins
Removes unused css
Updates use of deprecated list_entities* functions
New releases always default to recommended release
Fixes river entry problems
remove_subtype is evil.
Removes pagination from plugins index page.
Update plugins widget to 1.8 best practices.
added protected when getting release/project for creating a URL - trying to figure out why we are getting WSODs on activity page
fixed activate script so that it handles activating a plugin that has been disabled
Project descriptions have normal default formatting now.
Plugin release notes have normal default formatting now.