newui: JSHint fixes
newui: Create and delete group actions

TODO:
* Find users by email
* Validation
newui: Container Sidebar with containers & groups
newui: Remove dialog modal on transition
newui: full page errors (404, 503)

tba...
temp same with prev commit

add additional data of error 404, when they are available
temp show error of action
temp: add validation to create-container input

Now is set in the containers-controller.
Should make a view with an input and an area that in it will show
the results of validation.
temp