[Imp]:Improve configuration warning msg

[imp]:remove space

[rem]:remove code

[imp]:remove changes

[imp]:remove changes

[rem]:remove unused changes
Merge pull request #638 from odoo-dev/master-improve-configuration-warnings-ssh

[IMP] account, account_voucher, google_drive, hr_timesheet, users: use redirectwarning instead of some warnings to ease the configuration process. Also fixed some css and js issues in the display of the redirect warning.
[IMP] replace a manual & eager concat by chain.from_iterable(iter) -> iter
[IMP] account, account_cancel: added the possibility to cancel a single statement line when it has already been through the reconciliation process
[FIX] views: when loading an action, the active_* parameters should overwrite previous context
Merge pull request #925 from xmo-odoo/master-concat-itertools-xmo

Replace NIH concat function
[IMP] account: added a button on bank statements to see the journal items created as soon as some are created
[IMP] CRM, Project, hr_recruitment: improved code to set date_open-date_close field