[IMP]kanban View: harmonize kanban view by changing head as bold and centered and aliases as centered
[FIX] web: force seession context reload when reloading client

The goal is to ensure that HTTP requests
done while reloading the client (e.g. the
menu bar, etc.) do not use a deprecated
session context.

Also undo the previous fix from a0ee2b5
as it would cause other issues (e.g.
prevent setting the admin password/lang
when creating a new db using the db manager)
This logic does not belong in the business
methods of res.users.
Merge pull request #870 from odoo-dev/master-harmonize-kanban-view-rba

[IMP] crm, gamification, hr_recruitment, project, sales_team, stock: light kanban view harmonization.

Main changes :
- slight harmonization: bold centered titles, aliases display if left and right parts defined
- remove ".oe.e .oe_alias" classes + use of old icons; use fontawesome instead in the various kanban view
- regenerated the css for job position (weird indentation issues)