docs and limit detection of model changes
returns empty string on no model changes
fixes #2797
if response and url are empty, do nothing
Merge pull request #13 from FinalAngel/fixes/2788

if response and url are empty, do nothing
alignment and url check fix
Merge pull request #14 from FinalAngel/fixes/2788

alignment and url check fix
Merge branch 'develop' into fix-2788

Conflicts:
	cms/admin/pageadmin.py
fix tests
Merge branch 'develop' into fix-2788
Merge pull request #2807 from digi604/fix-2788

limit detection of model changes
Merge pull request #2808 from digi604/fix-2797

Fix 2797 (multisite static placeholders)
disable code
improve for jslint
fix an issue with arrow having no padding
fixes issue #2809