pullrequest: notifying new pullrequest
pullrequest: added watch/unwatch button
pullrequest: notifying new simple-comment

* for now, it just notify new simple-comment on the pullrequest
pullreuqest: notifying pullreuqest state change
pullrequest: updated watching menu
add server form validation message
issue,posting: Fix link to list page.

For both of issues and postings, make the link to the list page on the
view page to keep the query string used for the list just before see the
view page.

To do that, use referrer if only the referrer is to the list page.
pullrequest: added diff view
fix clipboard error
Merge pull request #152 from whiteship/yobi refs/heads/pullrequest/noti
show message on toggle watching

Conflicts:
	public/javascripts/service/yobi.board.View.js
	public/javascripts/service/yobi.issue.View.js
FileUploader/Downloader rebuilt to Controller/View

- yobi.Files : Controller
- yobi.Attachments : View
- yobi.pullRequest.Write module name changed to git.Write
- uploader-client.md is document for yobi.Files and yobi.Attachments
issue: Use number instead of id.
Remove Content Search feature not used.
hotfix - none display readme file at project overview
Merge pull request #159 from laziel/yobi refs/heads/file-uploader-130819r
Adding Validation messages per input
fix #223
Merge pull request #161 from laziel/yobi refs/heads/yobi-52r
Merge pull request #200 from alecsiel/yobi refs/heads/issue-215