Convert event history to a more versatile filterable list. Actual
filters are not exposed in GUI form yet.
Incremental work on filtering events. Some incomplete CSS tweaks.
Need to fully LESS-ify the admin css file, greatly tidying it in the
process.
More portal landing page dev and a general rearrangement of views.

All portal views are now *temporarily* namespaced within a 'p' package
so as to not collide with (incompatible, Bootstrap 2) templates for the
admin side. These will one day be unified!
Merge portal template cleanups and controller refactoring from master.

Conflicts:
	modules/core/app/controllers/SystemEvents.scala
	modules/core/app/rest/SystemEventDAO.scala
	modules/portal/app/controllers/Portal.scala