Raw API documentation is not sufficient for people to learn the working
principles of the API, especially when they already know the old one. And some
things have changed since the opendays so the presentations don't reflect the
current state of affairs.
Closes#3483
When using this code as is, the 'ids' variable throws an exception for not
being defined. In the new API, 'ids' is no longer given as a function variable
but as a variable within 'self'.
close#3406
* __content__ can't be used in Python implementation because safe_eval, so use
``0`` from Python implementation instead
* remove postfix from t-call tests because due to implementation details all
whitespace crap following a t-name is added to rendered template in Python
impl, and don't want to normalize whitespace.
* document qweb based (mostly) on JS version
* convert JS qweb tests to (mostly) language-independent XML so they can be
used for JS and Python implementations
* add some more tests (e.g. precedence between t-value and body in t-set)
* remove ``t-import``
* fix parity in foreach(dict) (and rename some variables to make array and
object versions more similar)
Xavier Morel
Nicolas Bustillos
Richard Mathot
Tymoteusz Motylewski
Raphael Collet