Refactor uTH - takes now a checker function
Move uTH to core - it can be used everywhere now
Only use a property, not a fn in uTH
Use new uTH syntax in depTree template
Use uTH in relation template

Only works on initial load right now, because uTH is not receiving a
token change event for relation.label!
Do something useful with nMCollections change fn
Get rid of relation DI in nestedMenu
Pass a changeState fn in labelSelector
Never use undefined as pre/suffix in relation
Remove change fn from nestedMenuCollection
Use eventing in labelSelector and nestedMenu
Delete obsolete code in labelSelector
Access state.change in relation service
Update relation specs
Merge pull request #300 from latin-language-toolkit/uTH_refactor

Refactor unusedTokenHighligher - state.change events in relation