Release Name: Beta2

Notes:
The differences between the last build (8) and this version are rather small. This release is more or less a kind of "milestone" because i think the undo/redo-system works and so the development can go on.
Although the snapshot-approach of the undo/redo-system does have issues and maybe i'm going to change it in the future.


Changes:
- fixed some minor bugs in undo/redo
- fixed a bug at creating a new entry
- shut off (for now) the ability to fast-edit entries