init panel order config: 1st draft. init npm publishing. minor corrections regarding indents and prop order

update pkgs. extend panel config. rewrite toggle mechanism and event emitters. fix stylings for the panels

rename 'pagelabel' to 'itemlabel'; revert former changes in regards to 'imgeurl' due to wrong branch; expand first knot in tree by default which holds the actual item selected; dynamic collection title in tree instead of literal one

codecleaning: delete obsoltes; uninstall obsolete dev-dependencies; implement routing base; bugfix: content threw parse-error regarding nested promises

delete obsolete files remaning from setup; bugfix togglebar; install nodemon as dev-dep; extend script in package.json

install openseadragon; provide webpack alias '@'; copy projectfiles from emo; adjust routing; insert quasar components