Fix app doesnt showed in desktop

Related to #607, #608 and this discussion on GGroup

https://groups.google.com/forum/?utm_medium=email&utm_source=footer#!msg/erpnext-developer-forum/cQMhAZAFiF4/7B8GHkH4RZ0J
Merge pull request #629 from MaxMorais/patch-4

Fix app doesnt showed in desktop
Merge pull request #631 from anandpdoshi/anand-wip

Do not validate links, selects, mandatory, etc. on cancel
Save naming series in property setter before reload