Label: Improve Project Label (Tag)

* Rename Tag to Label.
* Improve UI to edit Project Label.
    * Add scrollbar to view window and make edit window
      auto-resizable(#156).
    * Allow users to input category and name each separately(#157).
    * Show License and Language even if they have no label(#155).
    * Make the Edit button togglable.
    * Add appropriate auto-focus on the input box.
fix wrong message and mistype character
fix #226, #224, #223
Merge branch 'master' of https://github.com/nforge/hive into fix-minorcss-130611
Merge pull request #230 from wansoon/issue

Issue 덧글 삭제 및 Overview toggle 오류 수정
Merge branch 'master' of https://github.com/nforge/hive into fix-minorcss-130611

Conflicts:
	app/views/project/overview.scala.html
Merge pull request #232 from laziel/fix-minorcss-130611

#226, #224, #223 수정
fixed #229
fixed #231
Merge pull request #219 from npcode/fix/project-label

Label: Improve Project Label (Tag)
fix #236. toast-ui style has modified
#122 added forking process page between fork-form and fork
trivial
Merge pull request #237 from keesun/fork-pull/fork-process

#122 포크 안내 페이지 추가
issue: Improve confusing UI for issuelabel.

* Add a button to toggle label editor in create/edit page.
* Disable label editing on Advanced search box.
Merge pull request #240 from laziel/toast-ui-130611

#236 toast UI 스타일 수정
Added help messages to the pull-reuqest form
Merge pull request #241 from npcode/fix/issue-label-editor-toggle

issue: Improve confusing UI for issuelabel.
bugfix: duplicated list at site-project-list
Block calling project.ago() until fix the bug