[IMP] code auto reload: logger.error in case of syntax error
[FIX] Do not alter @import statements of saas/less
[FIX] Fix website theme slowness
[FIX] --dev mode crashes on read_template ormcache invalidation
[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()
[FIX] bundles: fix compiled css assets recomposition

- Do not include css in less source because malformed css will break
  less compilation
- Always recompose compiled css, even if not in debug mode
- Less and sass compilers mode @at-rules on top in order to comply
  to css 2.1, those @at-rules where left-over during the recompostion
  because they lost their marker. Those are now handled as virtual
  inline stylesheets.
[FIX] ir.attachments of compiled css assets not properly invalidated
[IMP]Account:Onboarding accounting screen

[IMP]:Add a field show_currency for differentiate a generic chart of account