#130 - Using concatenated assets on velocity pages in development mode

Updated assets path on login page(velocity)
Updated packaging to delete rails.new/tmp before assets:precompile
#130 - Removed unused dependencies coffee-rails and uglifier
#130 - Cleaning up unnecessary comments and code based on feedback from @sachinsudheendra
#130 - Created RailsAssetsService which reads the rails assets manifest file and provides appropriate assets file name for velocity pages. Reading manifest file happens only once now during application initialization
#130 - Making the backup_in_progress page independent of all assets in both rails2 and rails4