Updated ABS with the latest SupportV4
Refactor, refactor everywhere
Fixed the mess I put myself into

Merge remote-tracking branch 'origin/master'

Conflicts:
	ManagersCongress/res/layout/agenda_list_row.xml
	ManagersCongress/res/layout/list_row.xml
	ManagersCongress/res/layout/listitem_agenda.xml
	ManagersCongress/res/values/strings.xml
	ManagersCongress/src/es/ucm/mgrcongress/AgendaActivity.java
	ManagersCongress/src/es/ucm/mgrcongress/ListAdapter.java