Fetch activity feed for personal dashboards and render activities for content uploads, content sharing and content comments
Check for user/group image in all templates, Add view for visibility updates of content and groups, creating a group, adding a member to a group and general updates to a group.
Fix for sharecontent widget, Add images for users in the activity feed and remove dummy images.
Add levels to comments, indicate when there are multiple actors.
Add limit of 10 to activity stream, add some documentation.
Improved sorting for comments in activities
Add show more button to comment activity
Add the last (hopefully) permutation to a comment activity
Do check for actor url. Anonymous users won't have a URL to go to.
Switch the 'add member to group' activity from showing the group to showing the people added to the group, make the macros that render that available to all macro's by pulling them out into separate macros.
Implement infinite scrolling into the activity feed, add a 'no results' message.
Merge pull request #2570 from bp323/activities

Activities
Updated README
Updated UI README
Merge remote-tracking branch 'sakaiproject/Hilary' into hilary-grunt

Conflicts:
	node_modules/oae-core/activity/js/activity.js