Add calendar picker widget to date filter in forms

[Ed McDonagh]

No description provided.

[Ed McDonagh]

Added the widget function to give the date field nan id. Refs #53.

→ <<cset 1459c1a12a0a>>

[Ed McDonagh]

At last, a working javascript date picker. Some references to cdn need to be removed and tested with local versions. JS calls have had to be duplicated in the head for this to work. Refs #53.

→ <<cset 02547fb07202>>

[Ed McDonagh]

Added the bootstrap-datepicker css and js. CTFiltered now works, including formatting of date string and local resources. Refs #53.

→ <<cset 08a8b6b98222>>

[Ed McDonagh]

Changes now applied to mg and rf. Resolves #53. Need to add date format instructions.

→ <<cset 2ba8e6d49a6d>>

[Ed McDonagh]

Adding date format information and moving dates to top of the list. Format information should ideally be css stylyed - currently just an <i> tag... Refs #53.

→ <<cset fa62baea811b>>