Calendar Picker: remove unnecessary code from calendarPicker.{css,js}

Calendar Picker: remove unnecessary code from calendarPicker.{css,js}
https://bugs.webkit.org/show_bug.cgi?id=83685

Reviewed by Kentaro Hara.

Remove the followings from input files:
 - multi line comments /*...*/ (.js and .css)
 - single line comment //... (.js)
 - repeating whitespace (.js and .css)
 - leading and trailing whitespace (.js and .css)
 - empty lines (.js and .css)

This doesn't work for arbitrary JavaScript or CSS inputs, but
works well for expected input files like
css/make-css-file-arrays.pl

* make-file-arrays.py:
(strip_whitespace_and_comments):
(main):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@114090 268f45cc-cd09-0410-ab3c-d52691b4dbfc