Move all core code to .dot directory

[OmeGak]

I would like to completely isolate hard dependencies from user customizations/scripts. This will make fork&hack more friendly as there would be little risk to mess with the important bits. The missing parts are mostly install.deps.sh scripts and some parts in zsh such as zshrc.symlink.

The way I see it is to have topic folders within .dot/ that will work in the same fashion as topic folder outside, only that they run first.