Changed xpath expression to read as //mods:mods[1].
Fixed an issue with jquery dependancies in IAViewer.
Fixed null check in conditional statement.
Cleaned up coding standards.
added required js library with specified weight, instead of using the js_alter() hook.
changed the order of jq loading, and added a minified jqui to match the jquery version.
Document the oddness that is the jquery dependancies in bookreader.
updated file docs in js.
Merge pull request #49 from MorganDawe/7.x.jquery_IAViewer

7.x.jquery ia viewer