Datepicker: Improve document click event
Calendar: Fix broken day table cell attributes
Datepicker tests: Rewrite event unit tests
Datepicker tests: Code style improvements, add todo comment for ARIA
Datepicker tests: Fix calendar keyboard control tests

Fix calendar keyboard control tests by disabling animation and adding delay
Datepicker tests: Fix mouse core unit tests by adding delay
Datepicker tests: Code style
Datepicker tests: Unify show / hide options in helper create method
Datepicker: Fix alternate field demo
Datepicker: Fix demos after widget split
Calendar: Fix multiple calendar styles (follow-up)
Calendar: Fix German localization
Datepicker: Sort and clean up demo index
Datepicker: Improve date formats demo
Datepicker: Fix localization demo
Datepicker tests: Fix method test messages
Datepicker: Several minor code improvements

Several minor code improvements and make suppressExpandOnFocus
an internal variable
Calendar: Fix hover event setting and removing
Calendar: Improve code style and clean up