Little bit of clean up with name values passed to citeproc.

Avoid passing the "parse-names" value (was only used in citeproc-js, which
we no longer use), and avoid passing any empty name values.
Update citeproc-php.

Pending merge of https://github.com/Islandora/islandora_scholar/pull/107
(which is pending https://bitbucket.org/rjerome/citeproc-php/pull-request/2),
let's just update the copy of citeproc-php we pack.
Coding standards pass.

Remove some debug stuff, make the citeproc-php stuff get excluded
from the Travis build.
Merge pull request #109 from adam-vessey/7.x-LBL-60

Fix some issues in the display of citations.