templatekw: keep raw list or dict in _hybrid object This will allow us to handle bookmarks, extras and copies properly in "ifcontains()" and "get()".

templatekw: give name to lambda that constructs variables map of templater The constructed list is useless for "ifcontains()" and "get()". Instead, makemap() and raw dict will be passed to _hybrid object.

templatekw: convert list of key/value pairs to sortdict These sortdict objects will be passed to _hybrid later, which will allow us to handle them by "ifcontains()" and "get()" as expected.

sortdict: have update() accept either dict or iterable of key/value pairs Future patches will make the templater store a sorted dict in the _hybrid object. sortdict should be constructed from a sorted list.