Fix several high priority static analysis checks.
remove unused import.
Fix method
Remove blank option for collection field in works
Set otherno to blank when left blank.
Merge pull request #676 from nla/bug/acm-findbugs

Fix a couple of high priority findbugs issues.
Use guava rather than internal sun libs.
Remove spaces.
missing tag added

lack of a </icon> led to facet buttons losing style. This isn't a problem with icons after the content of a button - only if icons precede button content

Signed-off-by: mossrocket <peter@mossrocket.com>
fix logging