Global error section for setup.html and other html changes

Add global error section for setup.html
Add messages section to login.html, and remove unnecessary js includes
Modify navbar Help menu to include multiple methods to get help
Remove console.log
Return standard handle_exception error instead of rendering json.
Merge branch 'issue#338_replication_service' of https://github.com/schakrava/rockstor-core into schakrava-issue#338_replication_service

Add warning message on replication page when replication service is not
turned on

Conflicts:
	src/rockstor/storageadmin/views/user.py