Squashed 'app/wordseer/static/wordseer_app/' changes from 3372d04..66357c9

66357c9 JS no longer expects bare JSON arrays from API
9382e53 redirect some (not all) API calls from PHP to Flask
15cb558 use static path var from Flask

git-subtree-dir: app/wordseer/static/wordseer_app
git-subtree-split: 66357c92fbbcffa949be736ec0c0619965053e0d
finish merge
no more bare JSON arrays
pass some path params from python
metadata overview working
remove "position" from frequent result queries
update url paths
working on Sets (pending preprocessor change)

- model must be associated with Project and User
correct caching URL
Merge branch 'setup-api-controllers' of https://github.com/Wordseer/wordseer_flask into setup-api-controllers