Merge pull request #7 from gnedov/preMaster

Update my branch
Merge pull request #8 from gnedov/Andr

[Andr] to preMaster
Add check of Event parameters and implemented deleteEvent method
<Merge Vasl to preMaster>
Resolving conflicts:
	Calendar/src/com/agn/clndr/Event.java
Merge pull request #9 from gnedov/preMaster

merge preMaster -> Andr brannch