Adds a new, dynamic, report page

Hi!
I'd like you to test this commit and to give me some feedback.

"This huge commit reworks the way the jobs offers are displayed to the user.
The new report offers some excitting new features:
	- dynamic column sorting;
	- dynamic column search:
		- the publication date can be search with the help of
			a calendar (it's pretty :);
		- the company type, the company name, the contract type
			and the offer source can be selected from a dropdown
			menu;
		- a dynamic text search can be made on the job title;
		- the job location can be filtered from an address (or just
			a city name) and a range;
		- the job salary can be filtered with a top and bottom boundary."