chore(vendors): deleting/deprecating old javascript libraries

Deleted:
    calendarpopup Not even used, replaced by datepicker.
    jquery.easing Already provided by jquery ui.

Deprecated:
    jquery.autocomplete deprecated in 1.9 by jquery ui.

Fixes #6478
Merge pull request #6512 from sembrestels/rm-vendors

chore(vendors): deleting/deprecating old javascript libraries