configure new species distribution add view as default
add upgrade step
- move widgets to separate module
- use specialised widgets for dataset and layer input (popup aware)
- remove unused widgets
- remove no longer needed ajax endpoints and macros
get rid of all IAdding views for experiments
use default form rendering for unthemed new sdm page
add component lookup to allow per theme customisation of javascript wrappers (e.g. use require to load js modules)