changing default theme title with application name
fixed circular dependency for karma as opted by https://github.com/fmunoz92/mean/commit/ea6e219f732444018fdafcfeb86788533f62c218
pinning expressjs version to 3 so that until the rest of the codebase is upgraded we work with the supported version of express and not upgrade to express4 which breaks-out middlewares like session, bodyparser etc to different npm modules