NEW: Create collections button

CineCollectionsBackend/src/objects/CineCollection.java

CineCollectionsFrontEnd/cinecollections/package-lock.json

CineCollectionsFrontEnd/cinecollections/package.json

...ontEnd/cinecollections/src/components/createCollection.js

...onsFrontEnd/cinecollections/src/components/createPopup.js

...ectionsFrontEnd/cinecollections/src/components/profile.js

...lectionsFrontEnd/cinecollections/src/components/search.js

...onsFrontEnd/cinecollections/src/components/startscreen.js

...lectionsFrontEnd/cinecollections/src/redux/actionTypes.js

CineCollectionsFrontEnd/cinecollections/src/redux/actions.js

...ontEnd/cinecollections/src/redux/reducers/loginReducer.js

...ollectionsFrontEnd/cinecollections/src/rest/backendAPI.js