patch: remove interdependencies from the code.

[Tomaz Canabrava]

Dirk,

Read this patch carefully, if I got anything wrong here I can crash the
app, or worse, make your cat pregnant.

This is an important patch regarding to the 'unittest' feature: it starts
to decouple the app from the tangled web that it is today.

@all: I added a lot of TODO's on the code, I'll work on them in due time (
and by due time I mean "help me finish that" )

Thanks,

Tomaz
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