QWeb's get_template:
* remove the fallback that returned the entire result of IRQweb's
`load` if no match was made between the t-name of the first children
of this result and the template to render
* When get_template receives an etree, directly return it and don't
try to find a matching t-name in it. The loader was not called but
a matching was trying to be made, now that we removed the fallback
a lot of tests that were relying on passing etree didn't work
anymore.
IRQweb's load now return consistently the full result of IrUiView's
`read_templace` when asked to load an id or an xmlid. We make a special
case to patch the result if asked with an id or with a child view so
that the "t-name" of one of the first children of what we return is
always what QWeb is looking for.
Simon Lejeune
12e36a66f2