Fixes tweakToolbar() to work properly

Call order was incosistent, therefore toolbar never created its child
views and tweakToolbar() simply did nothing.
Adds hamcrest-all to pom and updated validators with new matchers
Domain objects now construct their id with an null value insted of 0

Also changed equals() and hashCode() method to check for null values.
Content dao find() method now checks for null values of provided keys
Extends sync adapter to sync bookmarks and cached feedbacks
Further implementations to feedback fragment and activity
Timestamp view now shows date and time
Adds proper drawer item handling when navigating through activities
Removes waitForDebugger() call