obsolete: tag more function for disapearance

obsolete: reorder import

obsolete: some more dead code

obsolete: sort all code Move (splitting some function) all code in dedicated section The hook wrapping have disapeared in the process.

obsolete: remove unused repo method

obsolete: clean up import

obsolete: more BC drop

obsolete: move version checks at the start of the file

obsolete: some more comment

obsolete: add and use templatekw decorator

obsolete: move old format stuff at the end

obsolete: introduce an extension helper and use it this extension helper allow most of setup operation to be declared in place using decorator. This allow clear separation between independant part of the code. This is the first HUGE wave of changes related to this introduction. The goal is to have a clear distinction and documention of every part of this extension.

obsolete: remove 2.2 compat hack

merge with stable

Added tag 0.7 for changeset 1b2757c1bd91