Fix terminator parsing in TreebankRetriever
Handle termination state for artificialTokens
Merge pull request #513 from latin-language-toolkit/termination

Minor: Terminator status of tokens
Better formatting in a template
Make morph retriever aborting more flexible
Fix formattin in relation
Add a TODO to relation
Reactivate change function in labelSelector

Fixes the broken functionatlity of the relation plugin's search
capabilities.
Fix relation spec
Merge pull request #515 from latin-language-toolkit/minor

Minor fixes for morph and relation
Wrap localStorageService in arethusaLocalStorage

This way it will be easier at a later stage to switch out the
localStorage solution, if we ever have to.
Fix file name of pluginSetting directive
Start to implement userPreferences service
Let plugin settings communicate /w userPreferences
Add globalSettings.persistSettings
Read from userPreferences in configurator
Fix userPreferences.set
Minor refactor in arethusaLocalStorage
Coerce booleans from localStorage
Propagate globalSettings to userPreferences