Updated per Rasta's suggestions:

Changed TaskListView.getTask return type from DefaultTreeItem to
TreeItem

TaskList.java - Removed the stub "open" method

TaskListView.java - Removed "findTask" method, renamed
"findAndReturnTask" method to "getTask"

TaskRepositoriesView.java - Removed unnecessary statements from
"saveTask" method

TaskListViewTest.java - Updated to be in synch with other changes

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