Fixing array vs string issue in listfilters.  Also forgot to minify JS
on previous form.js commit.
list getRow() js still wasnt right
fixes #788 - calc element in ajax on dbjoin elements - was not replacing values with labels
fixed possible notice in juser form plugin shouldProcess()
fixed: birthday date range filter was not correctly re-ordering min/max values
changed: link element, csv export - non raw value exported as link and not json object
art.js added to head and not into head.js loader - possible fix for browser stalling in ff
user group defaults to current users groups, and filters now show labels
changed: window modal js - now set as position fixed, as fileupload crop not working well when page scrolled to reach fileupload element
fixed: nasty date element issue. Edit a record, save it and before submission date is correctly set to mysql format. Press back button date is re-shown in mysql format and not formatted date. Resaving this date would cause it to be massively incremented. Added a regex to check if its already in mysql format and if so to use that as submission value
changed: fileupload image render - image alt now uses title rather than filename
fixed: date element with disallow date func, would still set date when pressing next/prev month/year buttons
viewlevel element - defaults to users max view level (by id) and shows viewlevel label in list view
Fix nojoins in List admin.

list.xml uses a nojoins parameter to only list fields from the main
table for e.g. Primary Key selection. However the code to use this was
missing.

This commit adds the code to handle this feature.
Fix plugin filtering on Primary Key selection
Add span classes to bootstrap input widths

Twitter have announced that in future bootstrap input-x classes will
scale font and margins with input box size. This fix adds span classes
to the list to allow user to select these for fixed-font size in future.
Comment out unnecessary statement
merge master
notice in list when ordering
fixed: list with single ordering on, orders ok, but then nav/filter would not re-apply the ordering.