[FIX] account: bank statement reconciliation incorrect rounding
[IMP] account: reconciliation widget: load list of move lines in a single RPC call with limit set. It drastically improves performances on big databases.
[FIX] account: reconciliation widget: for reconciliations with no partner, allow to select move lines from any partner and apply global move lines exclusion.
[FIX] account: the partner of a bank account can only be a company or an individual not related to a company
[FIX] auth_signup: refresh is no longer needed with the new api

Besides, it leads to a invalidation of the cache, which is not needed here.
[FIX] account: default product taxes on product.template

As product.template is now most commonly used than product.product

This is related to fix 96dd8bf
[FIX] website_sale: image doesn't change when the user select a product (for product variant list). website_sale_options: image dones't change in modal with the selection
[FIX] website_forum: respect karma when posting questions/answers/comments + more user-friendly errors

While posting new questions and answers the check
for karma limit was bypassed because it was using
super-user mode: use regular user instead.
Also improve the user feedback when karma level is
too low to perform some actions: post comment,
post question, post answer.
The usability in these cases still needs to be
improved.
[DOC] cmdline: database-related parameters
[TEST] website_forum: added tests.