Merge pull request #77 from sharayumungel/develop

added methods for getting pending and running jobs' count
Maven stuff
Merge branch 'develop' of github.com:grisu/grisu into develop
Maven
[maven-release-plugin] prepare release 0.5.15
[maven-release-plugin] prepare for next development iteration
Refactoring: JobSubmissionObjectImpl -> JobDescription
Fixed bug where no queue was found if no application was specified
Fixed no application bug (again)
Added constructor that takes in properties file for JobDescription