added throws declarations to existing tests
added another test case to IVirtualDiskTest
extended JavaDoc Ant file to include also tests
added more Latex files to gitignore
added report template.

Does not contain any real content written by us yet.
added JavaDoc documentation to FileState
fixed PMD warnings in ch.se.inf.ethz.jcd.batman.util
fixed method call because of missunderstanding.

Refactoring of the method name I misunderstood will be done later.
removed check for root directory name.

It's on a interface level not well defined. Can be tested later inside
a test case for the concrete implementation.
Merge branch 'master' of https://github.com/groggi/eth-jcd
Fixed IDataBlock interface JavaDoc to represent new architecture.

IDataBlock and IFreeBlock extend IVirtualBlock to represent two
distinctive kinds of blocks on the virtual disk.
added interface level JavaDoc to IVirtualBlock
added JavaDoc documentation to IFreeBlock
fixed old JavaDoc inside IVirtualBlock
Merge branch 'master' of https://github.com/groggi/eth-jcd