Datepicker changes, fixes #4666

Change tooltip, allow input other characteres than numbers,
normalize dates before open datepicker
More refinements in the SQL upgrader

I'm glad that this is all happening before the release.
Change tooltip
refs #5518 #5275

- AtoM will now use digital object checksums
to form the directory structure for the uploads
folder.

- Fixed a bug preventing the user from
uploading digital objects when the
"Upload multi-page files as multiple descriptions"
option is enabled.
Allow multiple IPs in ATOM_DEBUG_IP
Add migration from 2.x
Use new chk4upd address
Add new version_compare()

The old one failed comparing things like "1.3" and "1.3.1".
Change distribution parameter
Add migration script from 2.x
Add multi-value support in limit_admin_ip

Fixes #5602
Change distribution name
Merge branch '1.x' into 2.x

Conflicts:
	apps/qubit/modules/default/actions/updateCheckComponent.class.php
	apps/qubit/modules/search/templates/_advancedSearch.php