Maintain repository 'description' file.

Make use of the 'description' file in Git repositories which is used by tools
like gitweb or cgit and often by standard hooks. Update the file when changing
the description and initialize the Gitblit description from the file when
Gitblit reads a new, existing repository.
Close streams in finally block.

Close input and output streams in a finally block so that they do not linger around and occupy system resources when an exception occurs.
Merge pull request #114 from fzs/description

Maintain repository 'description' file.
Merge pull request #115 from fzs/fu-close-finally

Close streams in finally block.
Documentation
Prepare 1.3.2 release
Reset build identifiers for next development cycle
Added buildMavenArtifacts target to release script template