Ability to export/import admin settings

[anandology]

We want an ability to export and import admin settings.

When exporting, it should ask what all items to export, with a checkbox before each. something like:

[ ] committee structures
[ ] divisions
[ ] permission groups

and export that as a JSON file.

When importing it should show a similar checkboxes and import the selected ones.

[anandology]

I think it'll be easier to provide API to do this than building UI.