Added TaskList and TaskListView to support automated Mylyn tests for
local mylyn repo operations.

Red Deer task = https://github.com/jboss-reddeer/reddeer/issues/397

Ammened commit - added tests for new View class

Ammended commit - to correct broken test: TaskListViewTest.java
https://github.com/jboss-reddeer/reddeer/pull/397#issuecomment-29201408