[FIX] Calculate date interval using super user time zone

When you set the date of a cron the July 1st at midnight, if the user
time zone has a positive offset, then the converted UTC date is the
June 30th and adding 1 month will end up on July 30th translating to
July 31th instead of September 1st.

To solve this issue we use the super user time zone for the date
calculation.
[FIX] website: use internal route for SEO suggest keyword, old server is down
[FIX] website: seo, url encode params, + handle connection breaks
[FIX] web_kanban : resequence column and content by drag and dropping
[FIX] yaml tests: Set on_change keys not in view logger as debug instead of warning

This is related to commit d31faceb67fd87acaca00365dcfc28925b08a37f
(This is to avoid the runbot being yellow if on_change methods have extra keys in the returned value, this is not wrong, the web client will simply ignore them).
[FIX] css: add display table rule to oe_popup_form class

To correct the display of the "add contact" wizard in modal (buttons not well placed)
[FIX] web: image fields re-render on next/previous

By default, on binary images read, the server returns the binary size
This is possible that two images have the exact same size
Therefore we trigger the change in case the image value hasn't changed
So the image is re-rendered correctly
[MERGE] forward port of branch 7.0 up to 3632949
[MERGE] forward port of branch saas-3 up to 2f4be42
[FIX] website_event: show online in event in all country. Add filter online event. Keep the date between filter.
[FIX] website: google_map remove trailing slash and add an attribut for disable scrolling
[IMP] calendar: use registry of request in notify controllers
[IMP] payment_paypal: better label for paypal_seller_account

Rename the paypal_seller_account field as 'Merchant ID' instead of 'Seller ID' to match paypal terminology (opw 611765)
[FIX] procurement: refactor scheduler so it continues even if a procurement failed

If the mrp scheduler fails during the treatment of a procurement (due to a postgresql error, like an update lock), we let it try the other procurements, instead of stopping at the first procurement which fails.
Besides, we retry to treat the procurements which failed, until the list of the remaining procurements is always the same (meaning something is wrong and block the procurements treatment).
[FIX] l10n_be_coda: set a meaningful filename default value
[FIX] mail: to/from/reply-to addresses formated according to RFC2822

Use formataddr method from email.utils lib, which do the job correctly
[FIX] portal_claim: create claim with no partner_id

If partner_id is False, do not try to name_get

This fix is related to the rev 095be21ab17f7f731877d61c99b48b51119ff39a
[MERGE] forward port of branch 7.0 up to 245bb4e
[FIX] mail: forward-port of rev 245bb4ebdfeccb05134b3ff943c9fd0fb01173c2
[FIX] website_customer: pager with country filter