generic spreadsheett module to substitute case specific spreadshit modules. getContent not yet tested

refactored expandablefield that initiates a number hidden fields according to the maximum possible number of requested fields. Handle for choice change not yet implemented

expandablefield set uses select-onChange method updateFieldSet to update the fieldSet according to the users Choice. AddField uses try-catch to resolve error. startService dropped.

dropped portal_types update from stored file, viewAddInstance updates that via setConfigurationDict. minor clean-up

Graphic editor: previous mistake corrected node->edge. removeElement corrected - node_id_to_dom_element_id updated correctly on element remove

new intro-page, inputList and add new model are present in the same page. Default getConfigurateion from server not updated yet. Buggy back to parrent as list does not update correctly. Storing lastSession in local storage. DreamInstance document to be dropped