gnus: do not fill article by default
Revert "simplified some keybindings"

This reverts commit c62ac0ed30f07d7195a6c55e149c760d55bc14dc.
applied back some changes
installed flycheck
more stuff in flycheck recipe
ruby: using flycheck instead of flymake
js: using flycheck instead of flymake
go: using flycheck instead of flymake
cleaned up remnants of flymake usage
proper lazy loading