SES-1727 : Added checkbox to suppress data types and language tags in Explore and Query result views.

* Implementation: XSL adds data-* attributes on span elements for data that can be truncated.
* data-longform is the full quoted form with data type
* data-shortform is just the stuff inside the quotes
* show-datatypes cookie retains user preference between requests
* Found and fixed bug where jQuery wasn't loading due to typo in the file name. Apparently Workbench
  had been getting jQuery from one of my browser plug-ins.
SES-1727 : Fixed so that quotes on literals are shown in short form for consistency.
Merged in dvisser/sesame/ses-1727 (pull request #62)

SES-1727 : Added checkbox to suppress data types and language tags in Explore and Query result views.