PullRequest: delete merging branch
Review: nEndColumn cannot be exceeded nNodeLength
Review: mouseover thread shows block in IE,FF
Projects: increased the number of recently visited projects to 20
PullRequest: change help styles in conflict state
Projects: sort projects by name asc
Attachment: Fix attachment bug
Date: fixed to use agoOrDateString
fix the issue #1286.

Cause:
The column name at @UniqueConstraint in UserProjectNotification.java, notificationType, is wrong.
It is written as notification_type in 32.sql.

Solution:
It is changed to notification_type.
Merge branch 'issue/attachment-bug' of insanehong/hive

from pull request 880
Merge branch 'projects' of whiteship/yobi

from pull request 879
Merge branch 'fix-yobi-1268' of laziel/yobi

from pull request 875
Merge branch 'date' of whiteship/yobi

from pull request 881
Merge branch 'pullrequest/branch' of whiteship/yobi

from pull request 874
Merge branch 'howto-resolve-conflict-helpstyle' of laziel/yobi

from pull request 878
Merge branch 'issue-1286' of changsung/yobi

from pull request 882
Merge branch 'fix-commentblock-over-nodelength' of laziel/yobi

from pull request 876
pullrequest: fix multiple fork bug

- Project.findByOwnerAndOriginalProject should return project list, not
  one object
RouteUtil: Fix incorrect link to review thread

Replace buggy RouteUtil.getContainerUrl with
DiffRenderer.urlToCommentThread which works correctly.
Dashboard: Remove Percent on issue of milestone