merged in pull #336
general parser formatting & cleaning
exact matches in filter widget now allows using == (acts the same as a single equal)
cache is now checked properly after delayInit is set true - fixes #346
fixed pager removeRows option error & child rows now properly display. See #348.
reverted pull #349.
added buildTable script check to core
pager modification for grouping widget - fixes #281
added group_collapsed option & tweaks for use with the pager addon. Fixes #352.
added group-false & shift-click group header to toggle all groups. Fixes #344
remove unnecessary false from return false - see #305
updated demo url & removed ajax error url comparison; see #349
added pager savePages option. Fixes #345
column widget code cleanup
add build table widget
All class names used for finding elements have new "empty" default values. Fixes #381
Removed natural sorting of dates. Fixes #373
No duplicate ajax calls (removed table update for ajax calls when the server is already doing everything). Fixes #372
updateComplete should now fire properly, after an ansynchronous ajax call. Fixes #343
Filter widget will work properly with sub-tables. Fixes #354