Clear .idea files
Configure proxy for backend
Invoice schema header
Connect Send invoice with backend through proxy
Header part conformant to backend
Buyer and seller separate fields
Items correspond with json schema
Footer fields assigned to schema
Send invoice pass with success
Separate util module
util date service unittests
util date service unittests
Added items and summary service for invoice with unit tests
Test for summary edge cases
Added placeholders to text directive
Extract items list to separate directive
Merge branch 'develop' into feature/backend

Conflicts:
	app/scripts/controllers/main-ctrl.js
	app/scripts/directives/action-bar.js
	app/scripts/directives/input-text.js
	app/scripts/zwebapp.js