Added help messages to the pull-reuqest form
Block calling project.ago() until fix the bug
issue: Use more proper status code 204 than 200.

When user request to attach a label to an issue and the label is already
attached, the server response with empty body because there is no label
added newly. In this case, 204 No Content is better status code than 200
because it makes sure the empty body is not a mistake and inteded.

In Addition, This situation is not an error because it means, "Attaching
label is successfully, but there was no need to add label newly to the
issue because the label had been already attached to the issue."
Rename fork project
Remove the directory before cloning
issue: Fix typeahead for label category.

Typeahead for label category has not worked because typeahed source
is not updated after getting labels from server while initializing
labels.
label: Fix input boxes appear incorrectly.
Recover cloneRepository code
markdown: Fix incorrect autolinking to commit.
markdown: Fix autolinking losts chars before link.
Fix links on Issue-View page
Merge pull request #244 from doortts/enhancement/unify-issue-listing-view

enhancement: unify issue listing view
Merge pull request #243 from keesun/fork-pull/pull-request-form-help

코드 보내기 폼: 도움말 추가
milestone: enhancement issue management

- unify issue management of issue list & milestone issues
- change button message to be clear
- add issue delete button disabled style