Refactored list

- Split into mixins
- Added minimum dom nodes option, the render/hide mentions for the
visible viewport while scrolling
Remove profiler
Improve Backbone patch async events

by @aismail
Add jQuery patch to remove caching

by @ais
Remove indexing of ajax requests to get rid of references
Remove time methods
Remove unused params from channels_utils.widgetMethodForChannel
Update list-related Utils methods