Reworking on etd management

Moving index listing to new partial, adding custom action to get etd vocab based on field type
Creating form for vocab
Adding menu item to manage different vocab for etd

Adding bootstrap-x-editable gem for in-place edit and required assets and require
Also removing qa gem and related require stmts

Adding Controller, Views and routes for etd_vocabulary management

Adding regular route and custom for etd_vocabulary and
Adding view pages
Adding controller
Merge pull request #9 from ndlib/DLTP-91

Reworking on etd management