Merge pull request #456 from ajstanley/7.x

Fixed drush command, fixed link display
Get Drush from Github.

Drush devs are killing off their Pear repo... Great fun!
Fix creation of the symlink.
Merge pull request #459 from adam-vessey/7.x-drush-5.9.0-from-git

Grab Drush from git.
Fix issue generating derivatives when adding datastreams...

Objects in $form_state strikes again!
Merge pull request #460 from adam-vessey/7.x-UM-33

Fix issue generating derivatives when adding datastreams...
Implement an alter for the overview tab.
Merge pull request #461 from jordandukart/7.x-METRO-39

Implement an alter for the overview tab.
Typos.
Merge pull request #462 from jordandukart/7.x-remaning

Typos.
Change the default view to utilize the new metadata framework.
Re-added a variable already defined.
Add a class that may be needed.
Merge pull request #464 from jordandukart/7.x-default-view

Change the default view to utilize the new metadata framework.
Updated documentation to reflect the actual behavoir of the code.
Merge pull request #465 from nigelgbanks/7.x-INT-212

Updated documentation to reflect the actual behavior of the code.
Fix ISLANDORA-832
Merge pull request #467 from ruebot/7.x-ISLANDORA-832

Fix ISLANDORA-832
Update README and create XACMLs for anonymous ingestion.
Merge pull request #468 from jordandukart/7.x-anonymous-ingest

Update README and create XACMLs for anonymous ingestion.