Add high level getter/setter for executionOn attr
Move main layout to views/layouts/app
Add a header-main-side layout
Add currency model, currencies collection and data
Add importing panel
Fix ugly word breaks in footer
Bring some color, style tweaks
Revamp new trade view, improve trade model
Merge branch 'feature/new-trade'

* feature/new-trade:
  Revamp new trade view, improve trade model
  Bring some color, style tweaks
  Fix ugly word breaks in footer
  Add importing panel
  Add currency model, currencies collection and data
  Add a header-main-side layout
  Move main layout to views/layouts/app
  Add high level getter/setter for executionOn attr