This reverts commit 29c78ce841 and all other fixes
that have been made afterwards.
The motivation is that use-package is seen by many as a replacement for
`require`. Is use-package always defer the loading of packages then is breaks
this use case, this does not respect POLA so even if it was making Spacemacs
loading faster (up to 3s faster on some startup on my machine) we just cannot
use it, it would be irresponsible. Spacemacs should be easy to use, loading
performance will come with time but it is not a priority.
Had to create dummy init functions at some places since the owner of a package
is the last layer that defines the init function of a package. And a package
can be installed only if it has an owner.
Some elfeed commands can operate on a number of entries, based on the active
selection. When selecting entries with evil (visual state), the bindings for
these commands are shadowed by visual state bindings, and can't be accessed.
To fix this, the affected elfeed bindings are explicitly defined for visual
state.
