Dev 2.0.0 cleanup

[jochenklar]

• Remove views, static directories and templates for the old management interfaces
• Remove copy functions
• Rename key to uri_path for Condition, Task and View
• Refactor serializers (and remove list serializers)

[MyPyDavid]

only these tests are still failing. Do you want to include these in this PR?

rdmo/management/tests/test_import_conditions.py FFFF                     [  4%]
rdmo/management/tests/test_import_domain.py .F.F                         [  4%]
rdmo/management/tests/test_import_options.py .F.F.F                      [  4%]
rdmo/management/tests/test_import_questions.py .F.F.F.F.F.F              [  4%]
rdmo/management/tests/test_import_tasks.py FFFF                          [  4%]
rdmo/management/tests/test_import_views.py FFFF                          [  4%]
rdmo/management/tests/test_viewset_import.py .....F..F.F..F...........   [  4%]
rdmo/management/tests/test_viewset_upload.py .....F..F.F..F.F..F........ [  4%]

[MyPyDavid]

For the copying of sites and editors fields, we would like to have them either empty or filled with current site for example.
This code below would make them empty, but would it be possible (not too difficult) to implement the current site feature in this PR?

// management/assets/js/reducers/elementsReducer.js
if (state.elementAction == 'copy') {
    action.elements.element.id = null
    action.elements.element.read_only = false
    action.elements.element.sites = [] // or current site
    action.elements.element.editors = []  // or current site
  }

[jochenklar]

I created a new PR to this PR for this: #640

[jochenklar]

It actually needs to be done in the action not the reducer, since the reducer has no access to the config part of the redux store.