[FIX] web: base.css: fallback for browsers without calc support

see https://developer.mozilla.org/en-US/docs/Web/CSS/calc
[FIX] base: translate place holders in partner view

Placeholders for City, ZIP and State were not translated
Fixes #4340 (and one of #1755), opw 616589
Merge branch '8.0' of https://github.com/odoo/odoo into 8.0-win32