adds edit form for posts
Create mutual new and edit form
fixes button links
fixes edit and delete paths and implements delete
Implemented edititng for posts but with link, not button
adds categories to seed file and fixes minor bugs in category views
adds dropdown box to select category when creating new post
category list links to cateogry shows; shows have lists of posts from that category
fix CSS to match development branch
Merge pull request #11 from AlexSYanai/post_crud

Post CRUD