Updated .gitignore

"!.gitignore" is unnecessary
Fixed a bug in AuthenticationRedux.Activator.start()

BundleContext.registerService(class, service, properties) expects 2nd
parameter to be a service object or a ServiceFactory, interface was
passed instead.
Re-added "ManifestVersion" with correct value to the manifest files
Fixed users and authentication bundle interaction

Removed unnecessary insance variables from AuthenticationRedux.Activator
Correced Export-Please and Import-Please in authentication and users
manifest files respectively
Merge branch 'cleanup' into dev

Conflicts:
	Sprint3/src/AuthenticationRedux/Activator.java