If an object id was not specified Gitblit used HEAD to perform the
operation.  This breaks under some conditions like working with a
repository that does not have any commits on master but does have
commits on a vcs-import branch.

The new approach is to centralize the resolution of unspecified object
ids to a common method which resolves HEAD first but uses the most
recently modified branch if HEAD points to nothing.

This commit also includes a non-functional method for creating an empty
branch. I couldn't figure out how to make JGit create an orphaned
branch.

Jetty 7.4.4 introduces a fix to correct url generation. Unfortunately,
this "fix" creates a bug for resolving the root page. Evidently the bug
may really be in Wicket.

Wicket Bug: WICKET-3841
Eclipse Bug: 351199

* Clarified SSL certificate generation and configuration in light of the
hostname verificiation that JGit currently does despite
the http.sslVerify=false setting.

* Added some troubleshooting information related to filesystem
permissions and reading repositories.

* Switched from JavaService to Apache Commons Daemon.  Not sure what
happened to JavaService as it stopped working for me on Windows 7 with
Java 1.6.0_26.  Commons Daemon accomplishes the same thing and offers a
nice service control utility.

* Build script overhaul including building & publishing GO, WAR, Docs,
and Site.
* Restored JGit 0.12.1 dependency and backported Blame.  Got tired of
waiting for JGit 1.0.0 Maven artifacts.
* Changed Summary Page layout
* Optional cookie authentication
* Added icons for log, tags, and branches panels.
* Show last commit author and short message on branches panel.
* Unit testing.
* Documentation.