fixes issue #11 "Embed the jquery[-ui] into the project."

This patch adds the minified js and css files for jQuery-ui, including
jquery.ui.core.js, jquery.ui.widget.js, jquery.ui.mouse.js,
jquery.ui.datepicker.js and jquery.ui.slider.js with the css style
"smoothness."
Adding persistance of location range parameter.

This patch addresses the feature described in issue #12. Futhermore, it
improves the interface of the location filter by updating the filter feedback
(reading "Max: x km") when the cursor is moved and updating the filtering of
the job offers only when the cursor is released.
Reviewing coding style.
Merging branches.

'code-style-review-javascript', 'issue-011' and 'issue-012' into new-report

Conflicts:
	www/js/dynamic.js