[IMP] bundles: display warning for forbidden local @imports
[IMP] hr: first employee is named after admin
[IMP] bundles: also display css errors on debug mode
[IMP] Cache bundles in ir.attachments instead of a LRU

Forward ported from 8.0's commit: 8402625
[FIX] mail: bad test
[IMP] hr: strenghtening of write()
[ADD] l10n_in_account_voucher: Localization module for Voucher Report, Template and invoice Followers