Merge pull request #303 from kula1922/feature/gui

Added preloader for allocation, and disabled rm rows when there is only last row
pricing object as db table; general pricing object model added (and removed asset model and tenant group); team manager added; base usages moved to over 100 id and default other extra cost type added
Merge pull request #308 from mkurek/feature/team-owners

pricing object as db table; general pricing object model added (and remo...
cost plugins fixes
Merge pull request #310 from mkurek/fix/cost-report-plugins

cost plugins fixes
flat design
flat design
fix models migration
Merge pull request #311 from mkurek/fix/cost-report-plugins

fix models migration
Merge branch 'develop' into fix/gui

Conflicts:
	src/ralph_scrooge/media/scrooge/partials/calendarmenu.html
	src/ralph_scrooge/media/scrooge/partials/leftmenu.html
	src/ralph_scrooge/models/pricing_object.py
	src/ralph_scrooge/urls.py
added missing view
added missing package
Merge pull request #312 from ar4s/fix/gui

Fix/gui
Customized left menu