Merge pull request #75 from Scarygami/feature/appengine

Update Account model
Merge pull request #87 from Scarygami/feature/appengine

Fix post_date format
change date format in ActivityRecord
Check annotation in addition to content
Check associated AR for activity types/product groups
Ignore posts that have the #gde tag removed
Fix issue with update posts not containing all fields
Merge pull request #88 from Scarygami/improve_gplus_tasks

improve gplus tasks
Add activity_type and product_group endpoints
Merge pull request #91 from Scarygami/type_lists

Add activity_type and product_group endpoints (PR part 1)
Auth debugging