Tries with $requests against SP backend: query, get and save.
Dropdown in top navbar. Full width container.
Fixed bug in REST update of operations
REST save/get items
bootstrap-switch instead of extra navbar for Model/Runtime-switch
itemList with expandable tablerows
Merge branch 'origin/master'

Conflicts:
	gui/src/main/scala/sp/json/SPJson.scala
	gui/src/main/scala/sp/server/SPWebServer.scala