code refactor for add user and edit user views

merge the code of add user and edit user views
into single file
add new logo to the webui
Fix height of navbar, logo and content
Increase padding for logo
Add chrome to supported browser check
Change navbar color and appliance bar top margin
Merge pull request #459 from kamal-gade/issue#458_refactor_add_edit_user_code

code refactor for add user and edit user views
update django hack for new version of six