Metacat

add getaccesscontrol and setaccess api calls

Handle the case of trying to insert a conflicting permission order for a document

move dbconnection object out of base class and create it for each db access so it can be released

Add success message to metacat response for setaccess action

handle multiple <principal> elements in the allow/deny blocks

Verify we are in the permission and principal sections before setting values on dao object.

Use OR to add permissions, not AND

Change access section in getaccesscontrol and getdocumentinfo apis to be more eml 2.1.0 compliant. Add a block access option to setaccess api.

change AccessControlForSingleFile to only be instantiated for one file. move ACL methods to AccessControlForSingleFile. Change format of access sections returned to EML 2.1.0.

Removed some old commented out code