[#1652] To merge directory planner into planners under app/assets/stylesheets/
[#1654] To merge directory planner into planners under app/assets/javascripts/
[#822] add close&submit function to issues comment
[#1653] add projects page
[#1653] add paginate for projects index page
[#]1654  add planners.js and planners.css
[#1654]  change css to scss
[#1021] fix the bug, rename the modal.css ==> modal.css.scss
[#1571] remove the function that "press Backspace to delete the previous tag"
[#1666] To precompile planner.js and planner.css