New element format

 - All elements can be added in step-by-step fashion
 - Element add/edit forms dynamically generated to data need
 - Different sections for groups of data in the edit forms
 - New overlay styles for adding elements
 - Filtering out unsupported elements from add page (allows for depreciating elements, testing new ones quietly)
Merge pull request #397 from jessevondoom/master

New element format