remove style override as layout is not suitable
add back basic functionality on index page and CRUD action
add back basic function to post model

- posts/index page is for internal use
- home/index page might use for external to display all post
add several front-end js library

- angular-classy
- summernote
- datepicker
add datepicker and summernote to post edit page

- add back require link at application.js and application.css
- create base angular module of myk
- remote content field at index page as it was too lengthy
minor change on top-menu
relocate collection_paginate from Base to Application controller
update home index page to show content of Post records