UIMA-4084
* set annotation mode by double-click on type tree node
* view menu check-box action to show types that have no annotations yet
* edit selected annotation with keyboard: CTRL+u/i/o/p to decrease or increase begin and end, respectively
TODO: documentation

git-svn-id: https://svn.apache.org/repos/asf/uima/ruta/trunk@1636302 13f79535-47bb-0310-9956-ffa450edef68