Model for GDrive folder, can list and add, listing is fully tested
GDrive integration now has its own Flask plugin. init_env is set up to use it by default
Basic test page for GDrive folders and files, updated Jasmine tests for latest code and pluginification
Updates to GDrive models (new format for request params) and tightened up the display code for the sandbox page
WIP on permissions
Added permissions (currently not working) and deletion (not working), add folders now works, and descent into trees is tightened up
Merge branch 'feature/gdrive-integration' into brad