Barcode autocomplete doesn't escape labels

[Thomas Berezansky]

When a title, branch code, user name, etc includes things like & the autocomplete prompt window errors out due to invalid XML. The branch below adds some escaping to the label to protect against that.

http://git.evergreen-ils.org/?p=working/Evergreen.git;a=shortlog;h=refs/heads/user/tsbere/barcode_complete_escape

[Thomas Berezansky (tsbere)]

Note that for my quick testing on concerto I set up two global completion rules:

1. Active True, Prefix CONC40, Length 12, Padding 0, Applies to Items
2. Active True, Prefix CONC41, Length 12, Padding 0, Applies to Items

Then I entered 539 into item status to get a prompt containing &.

[Ben Shum (bshum)]

Works for me. Picked to master, rel_2_3, and rel_2_2.