Statemodel update refresh

[lapp0]

Rework DynamicListOf and DynamicAttrsOf so it follows an update-StateModel -> refresh navlist procedure to isolate the source of state to one place. This applies to all operations.

• StateModel mutation -> refresh(): DynamicListOf.remove_clicked
• StateModel mutation -> refresh(): DynamicListOf.add_clicked
• StateModel mutation -> refresh(): DynamicAttrsOf.rename_item
• StateModel mutation -> refresh(): DynamicAttrsOf.add_clicked
• StateModel mutation -> refresh(): DynamicAttrsOf.remove_clicked

Misc Cleanup:

• remove dead code: editing and renaming functionality in DynamicListOf
• ensure DynamicListOf.add_item adds a list index, not newAttribute
• sorting of lists is wrong, [10] is comes before [0] because string sort is used
• Don't edit DynamicAttrsOf on double click, edit on f2 with edit button

Smoke Test Checks:

• DynamicListOf add
  - [ ] DynamicListOf remove
  - [ ] doesn't decrement the index of elements following, fix
  • will fix in ListOf remove doesn't decrement following indices #263
• DynamicListOf up
• DynamicListOf down
• DynamicAttrsOf add
• DynamicAttrsOf rename
• DynamicAttrsOf remove

Further PRs (before v0.2 release):

• Apply max_renderable_field_widgets so the universe of fields aren't rendered.