WIP: move posts to module based file orga pattern

Summary:
* it's work in progress
* I would like to transfer features like tags and config as well
* this is for discussing / early feedback

Test Plan:
* test if everyhing works as before
* test if you like the module based file organization ;)

Reviewers: shadowhand

Subscribers: rjmackay, aMoniker, seth

Differential Revision: https://phabricator.ushahidi.com/D482
fix lint