Exract tabs of sidepanel to an own directive
Minor refactor in main_with_sidepanel template
Fix globalSettings filename
Fix DI in globalSettings
Notify on layout changes
Add hotkey to cycle through layouts
Fix configurator for spec files
Add missing i18n updates
Merge pull request #521 from latin-language-toolkit/sidepanel_abstraction

Sidepanel abstraction & Layout switches
Allow custom strings as cite reference

Parse if a cite reference is a cts urn - if it's not just display
whatever custom string is present.