[IMP] base: better evaluation context on menu

Allow more complex evaluations (e.g. using time) in domain of ir.ui.menu.
Move _get_eval_context to ir.actions.actions for basic context elements.
opw 603382
[IMP] web: better content-type for attachments

Add the corresponding content type document instead the default content type.
This allows browser to detect the type of file being downloaded.
Fixes #1225
[IMP] point_of_sale: make the floor plan background fit the floor
[FIX] l10n_ro: changed module author as requested in issue 621105
[FIX] shell: now catch SIGINT and raise a regular KeyboardInterrupt
[IMP]hr_recruitment : Add a stat button for the created employee
[IMP] shell: load Odoo modules that have a "cli" directory
[IMP] config: allow defining addon_path in multiline

With a config like
[options]
addons_path: ~/foo,
	     ~/bar

'~/bar' was interprated as '\n    ~/bar' and is considered as a local directory
by os.path.abspath

Fixes #4403
[IMP] ecommerce onboarding misc improvements: tour, qty inc/dec, add placeholder for product desc bottom of add to cart button, add print button, cart icon fix for all themes, and last delivery module menu add to sale, so now both sale or warehouse delivery menu with access right stock.group_stock_manager and base.group_sale_manager, move from demo file to data file set for default one data as a delivery courier.