Replace small A-Z icon with large arrow, put A-Z in label

NWBib mail, 2014-07-23, UP
Fix issues and add option to clear list of starred items

NWBib mail, 2014-07-23, UP
Merge pull request #56 from hbz/NWBib-20140723-UP

Updates based on NWBib mail 2014-07-23, UP