Make the SSH authentication methods used by the server configurable,
so that for example password authentication can be turned off.

For this, a `git.sshAuthenticationMethods` setting is added which is a space
separated list of authentication method names. Only the methods listed will
be enabled in the server.
This is modeled after the option of the same name from sshd_config, but it
does not offer listing multiple required methods. It leaves the door open,
though, for a later extension to support such a multi-factor authentication.

Since this also includes Kerberos authentication with GSS API, this obsoletes
the `git.sshWithKrb5` property. The latter is removed. Instead, to enable
Kerberos5 authentication, add the method name `gssapi-with-mic` to the
authentication methods list.

Fixes #964 - add missing redirect after restoring user in new session

Ticket Reference handling #1048

+ Multiple commits in a single push

Initial implementation of a JetBrains YouTrack hook for GitBlit.

fix baseURL handling in HttpUtils, fixes #1083

Fixes #1062 - Upgraded to Prosemirror 0.6.1

Fixes #1061 - Most recent first on filestore page

+ Supports referencing:
  + Tickets from other tickets via comments
  + Tickets from commits on any branch
+ Common TicketLink class used for both commits and tickets
  + TicketLink is temporary and persisted to ticket as a Reference
+ Support deletion of ticket references
  + Rebasing patchsets/branches will generate new references
  + Deleting old patchsets/branches will remove the relevant references
+ Substantial testing of use cases
  + With and without patchsets, deleting, amending
  + BranchTicketService used during testing to allow end-to-end ref testing
+ Relocated common git helper functions to JGitUtils

Use utf-8 for Javadoc

fixes #966 to prevent always searching all repos

Fixes #1028 - FilestorePage now pages and filters

That will fix build of javadoc in Windows zh-cn (and maybe some other locale).
Unknown why javac works well.

Fix for #962 - Delete patchset ability

Fix for #1042 - Filestore items now shown as icons

Fixes #882 Honour allow new ticket setting

Fix for #1037 myTickets now honours permissions

Fix for #1034 Ticket Page Error

Support for editing documents in the browser #974

+ Prevent Edit of old doc version

+ New docEdit page with links from docPage and docList
+ Bespoke menu system with full screen edit mode
+ npm required for building client side scripts
+ Ant script added for BuildUI which performs npm commands
+ Update font-awesome to 4.5.0
+ Factor out to JGitUtils common code in BranchTicketService for EditFilePage
	+ getTreeEntries
	+ commitIndex
+ Merge capability for document editing

Fix for #1031 to display error message

Links to filestore items now download file with correct filename and extension

+ View and Raw both download the actual file
+ Blame will show the metafile

Fix for #976 - Filestore links via browser

Ticket #998 document dh keysize

Fix char encoding in setup_proxy.mkd

Fix authentication failure warning log messages for FEDERATION_USER

Lower log level of servlet authenticate when request is already authenticated