updated bootstrap-datepicker
temporarily disabled native picker for easier mobile testing
for #511, fixed updated date picker functionality, used bs-datepicker instead of Samsung date picker on tab2, removed previous Samsung date picker bug workaround, tweaked css of date picker for touch screens
rebuilt css, #511
some css tweaks for date picker, to test on mobile
added ability to load any form with Dristhi style with ?dristhi=true
date picker dristhi-specific css tweaks
more tweaks
step back with css for date picker (reset)
decent css for phone
rebuilt everything with new mobile date picker for browsers that do not have a native one, and for the buggy Samsung tab2 Internet App, #511.
clean up
Revert "rebuilt everything with new mobile date picker for browsers that do not have a native one, and for the buggy Samsung tab2 Internet App, #511."

This reverts commit 880e9434b1c73391c0b6dea5216cf9d5ca0c94bc.
(Corrected) rebuilt everything with new mobile date picker for browsers that do not have a native one, and for the buggy Samsung tab2 Internet App, #511.