layout UI modification

- layout has widened
- size of some fields set to relative value(px to perc)
- project header style has changed
project UI modified. fix UI problems

- navbar turn to darken background
- trivial style changes included
- commentForm has divided to partial template
- color of buttons in board,issue view has changed
- responsive CSS applied experimentally: GNB, Code Browser
- search form in global help(help/toc) has removed
project layout has changed. (home,navbar,prjmenu)

- project home layout has changed
- link to original project of forked one has moved to next of project title
- repository URL shows on click [clone] button
- watch button style has changed
- apply bootstrap scaffolding on issue list
Merge branch 'master' of https://github.com/nforge/hive into more-flat-ui
Merge pull request #276 from laziel/ui-change-130621

레이아웃 변경
apply affix to .project-menu, fix trivial CSS

- bootstrap-affix has applied to .project-menu
- align buttons on right borderline
- outer margin, padding on code browser has reduced
- width of userinfo dropdown has widened
many changes on index, styles, tabUI and more

- fluid grid applied on index
- myProjects(in index) has modified
- modified .num-badge. no background, no border.
- added .num-noti instead of former usage of .num-badge
- which active tab is remembered. (experimental: myProjects, pullRequest, projectHome)
- project labels are turn to gray
- unused code blocks removed
- modified codeBrowser code according to JavaScript module guide
- project menu style has modified
Merge pull request #282 from laziel/ui-change-130621

ui-change-130621 수정
Merge 'master' into ui-change-130621

Conflicts:
	app/assets/stylesheets/less/_hiveUI.less
	app/views/board/view.scala.html
	app/views/issue/view.scala.html
Post view responses as JSON when accept header contains application/json
fix: private project watch bug #278
Remove 'Powered By' test from ApplicationTest.

The root page may not have the phrase.
Add the Welcome page to reset the Secret key.