[IMP] mandate a variable name in foreach
[FIX] _even/_odd were reversed, also some reformatting thing
[IMP] use enumerate instead of explicit index thing
[IMP] use Sized for iterable size and remove support for count
[IMP] guard for None enum, remove 1 level of indent
[REM] python-qweb support for as-less foreach
Merge pull request #463 from xmo-odoo/qweb-foreach

Qweb foreach