[FIX] encoded some stirng with utf-8 which could not be converted into ascii
[FIX] report: force encoding of dateformat string

some locales have unicode into the date format (eg: zh_CN uses %Y年%m月%d日)
conversion using str() would not work for them
opw #593932
[FIX] ir.model: during creation of custom models, the _auto_init call should also take care of custom fields created on-the-fly

The _auto_init call in ir.model.fields creation will not
do it because it happens before the insertion of the model
in the registry. It will only work for later addition of
fields.
[FIX] res_currency: avoid getting blocked when creating a curreny without rates
[IMP] res_currency: more modular solution
[FIX] res_currency: update linked tests
[FIX] res_currency: pass context to currency function
[FIX] res_currency: allow silent failing for computation of current rate if no rate exists, allow accessing the tree and form view if incorrectly configured currency
Launchpad automatic translations update.
Launchpad automatic translations update.
Launchpad automatic translations update.
Launchpad automatic translations update.
[FIX] only descend to children when necessary
[IMP] improve readability
Launchpad automatic translations update.
Launchpad automatic translations update.
Launchpad automatic translations update.
[ADD] ir_translation: allow extra translations in folder i18n_extra
[IMP] ir_translation: better log message
[ADD] changelog file with support of i18n_extra folder