The graph is generated server-side and therefore requires that the
commit table row height be fixed and match the row height of the
servlet.  There will be layout misalignment if remotes refs are
displayed.  Perhaps this can be improved in the future.

Change-Id: I39d0ffc7b1c3679976ce8c198c772ff86238f1a5

Change-Id: I92d1d742e286643e1e1ab47a410b3fda146d1741

Change-Id: Idb7de272589e086da9b2b3a241dcd082c1c8f27b

NPE fix in default branch determination & NPE fix when commit cache contains removed repo

This is a normal condition that complicates debugging, i.e.
when catching all NPE's.

Add the commons-io library explicitly to the depencencies.
It was already present as a transitive dependency but is now used in code.
Using the version 2.2 as that got so far already packaged in ext.

Implement adjusting file and directory permissions for shared
repositories in JGitUtils.

Implement the methods getFilemode and setFilemode
in JnaUtils. Not using the libc names as we don't
necessarily use JNA and because it is not necessarily
a one to one mapping.

repository as if it was created with the --shared command line switch of git.

Set the user repository name space from settings when starting Gitblit.

Gather logic for building the path/name of a personal user repository into one class.

Close streams in finally block.

Maintain repository 'description' file.

Close input and output streams in a finally block so that they do not linger around and occupy system resources when an exception occurs.

Make use of the 'description' file in Git repositories which is used by tools
like gitweb or cgit and often by standard hooks. Update the file when changing
the description and initialize the Gitblit description from the file when
Gitblit reads a new, existing repository.

Add a new class, HtpasswdUserService, which performs authentication
against a text file created with the Apache 'htpasswd' program.

Added dependency on commons-codec:1.7

Add setting to cap number of activity days to display

This patch adds a setting, 'web.activityDurationMaximum', that specifies the
maximum number of days of activity that may be requested. The default value is
30. When the number of days requested exceeds this value, the request is
handled as though the maximum value was requested.