Improve checkConflict
(refs #180)Eliminating the working repository cloning in Wiki.
(refs #180)Fix saving and deleting Wiki page.
Remove unused import statement.
Fix a link to the committer page.
Improve checkConflict

* Delete temporary RefSpec after checkConflict
* mergeguide use checkconflictInPullRequest instead of checkconflict
(refs #180)Implementing reverting from history without ApplyCommand.
(refs #180)Reverting from history without working repository is completed.
Display selected page differences only.
(refs #180)Remove Directory#getWikiWorkDir()
(refs #180)Fix a problem about multi-byte characters.
Remove unused import statement.
(refs #180)Fix compilation error.
Improve repository creation to not use the working repository.
(refs #179) Improve merge performance

* merge without tmp dir repository
* remove merging ops from mergeguid
(refs #179) Fetch from fork branch before merge
(refs #179) Remove refs/pull/${issueId}/merge
Merge remote-tracking branch 'master' into improve-pullreq-performance
(refs #179) Refactor
(refs #167)Add pusher info to WebHook