massupdate: Make labels also updatable.

* Attach labels to issues using "Attach Labels" dropdown.
* Detach labels from issues using "Detach Labels" dropdown.
fix trivial CSS (pull-request, navbar)
Merge branch 'master' of https://github.com/nforge/hive into fix-trivial-css
fork-pull: move pullreuqest from rejected list to opened list
user: Refactor UserApp.anonymous.

* Move anonymous from UserApp to User.
* Use User.isAnonymous() instead of User.anonymous so far as possible.
massupdate: Fix permission error while updating.
massupdate: Fix a bug issues cannot be unassigned.
assignee: Fix NPE if assignee.user is null.
project: Apply a patch missed at 5e6f22b.
fork-pull: remove link to branch
Merge pull request #106 from npcode/feature/mass-update-label

massupdate: Make labels also updatable.
Merge branch 'master' of https://github.com/nforge/hive into fix-trivial-css
project: Fix a FK execption while deleting.

When deleting a project, its assignees also should be deleted.
issue: Use User.anonymous.id to unassign.
issue: Use Project.assignees instead of Assignee.finder.
issue: Remove unnecssary calling of User.find.byId.
project: Delete Tag editor from setting page.

It is not needed because the tags can be edited in Overview page.
issue, board: Show what you wrote after writing.

After updating or creating new issue or posting, redirect to issue or
posting page, not to its list page.
Merge branch 'master' of https://github.com/nforge/hive into fix-trivial-css
fix minor CSS

page width has widened, including trivial fixes.