- removed metadataTabController script tag from html
# overall replacement of myAuthorSystem with instance of AuthorSystemContent model

# renamed divContextParameters (+ temporary changes in index.hmtl, will be overridden soon)
- removed metaData tab which was a mere placeholder for Tom's CMS work
+ added metaData dictionary
+ added functions addMetaDataToUnit() and removeMetaDataFromUnit()
# changed parameter access and collection in contextInfoController and locationInfoMapController
# moved "get current unit dictionary" code into function getCurrentUnitDataModel()

# simplified event handlers for new scenario modal window input

# re-added "template" divParameterSelection in index.html to test select2 plugin (flat ui) on clone
# TODO: fix async select2 rendering (not working with dynamically generated DOM elements)

# minor changes before *the great parameter refactoring* i.e. generification, type checking, value checking, ... (to do)