Datepicker: Set explicit button text in demo

Fixes #9626
Closes gh-1283
Effect: Create a local jQuery variable to make jQuery Color work

Fixes #10199
Closes gh-1282
Merge branch 'master' of git://github.com/jquery/jquery-ui into 9264-accordion-heightStyle-auto-has-problems
Accordion: heightStyle: 'auto' has problems

Fixes #9264

Using .show method and outerHeight property to force height calculation when
heightStyle='auto'