Update target platform to Kepler M4.

We should always stay up to date with the latest Eclipse version
so I am moving the target platform version in parent pom.
This should also fix #22.
DefaultTree, DefaultTreeItem + all relevant objects and methods
implemented. Old API is deprecated now.
added new TableHasRows condition
changed DefaultTable to Table
Added new constructor to LabeledText
Added possibility to choose table row according to column index and name
Execution order of console view tests is ensured now