[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
Update __openerp__.py

Little mistake in the descreption seen during translation.
[FIX] website.theme: when the user does not raise an exception. Display error message when the user install or customize a theme.
[FIX] tour: don't display all log when log an error
Merge pull request #1875 from ma78nee/patch-1

Little description mistake
Merge pull request #1781 from odoo-dev/master-fix-theme-need-alltime-less-chm

[FIX] website.theme: when the user does not raise an exception.
[FIX] Do not assume all exceptions with a code attribute to be HTTPExceptions