erp5_autocompletion_ui: Add JS ERP5Autocomplete() parameter to transform text before sending AJAX request.

For example, if one wants to uppercase/lowercase the value entered by
end-user.

erp5_autocompletion_ui: Autocompletion property value set to the field should be the one queried from the Catalog.

erp5_autocompletion_ui: Consider that description may not be needed, thus only one line, the label, is displayed.

Possible through defining a TypeBasedMethod (PORTAL_TYPE_getCompletionDict)
returning a dict serialized in JSON by the calling method, or otherwise
overriding fallback script (Base_getCompletionDict).

erp5_autocompletion_list: Move away generic JS code from RelationField as it should be reusable anywhere.

Limit the number of results to 15 instead of 20 as it seems to be enough (taken from an existing customer project).

RelationField: Implement autocompletion and use it by default once erp5_autocompletion_ui is installed.

This reverts commit 264459a7.

Sorting by title on the module listboxes does not make sense because of the
way of the default title generation.  (ex SO-1,..SO-100 are sorted SO-1, SO-10)

Also, specify missing CountMethod in the listboxes.

erp5_autocompletion_ui: Increase delay before searching from 300ms (default) to 600ms, this should be enough...

For example, MultiRelationStringField does not return a plain value, but a
MultiRelationEditor overriding Base_edit default behavior.

So, Relation Fields in ListBox were ignored during validation as the input
value is compared with the current (default), thus the field could not be
cleared as the value from the actual object was not retrieved at all.

erp5_jquery_ui: As jquery-ui is imported straightaway, license should have always been jquery-ui one.

This reverts commit 3f8b6a39.
Also revert "fix a typo. potral -> portal."
(commit fa7113c9)

*_path parameters are preferred at SimulationTool level over UIDs, and
may not work as intended.

so that we can call it from restricted environment.

* now Selection for anonymous is stored per its content and its key is embedded in ListBox rendering.
* we no longer provide cookie to each anonymous user.
* thus same URL (i.e. same parameter) for any anonymous user should have the same result.
* Selection storage for anonymous can be still different from the storage for the normal users.

see http://docs.python.org/2/library/unittest.html#deprecated-aliases