Reworked user and job APIs

Also removed tag API until design stablizes
Added .project file for eclipse use
Added proxy functions for jobs, directories and files
Correction of proxy functions for files
Added cassandra mosule (requires helenus)
A few cosmetic changes to the front end
Merge branch 'harney-devel'
Added apps API
Merge branch 'master' of ssh://github.com/jfharney/ScientificWorkspace
Added files API
Cosmetic changes
Merge branch 'master' into harney-devel
WIP: wiring front end to back end
WIP: Front end for scientific workspace
WIP: Front end for sci workspace