add git gutter fringe

Signed-off-by: Sebastien Varrette <sebastien.varrette@uni.lu>
Upgrading Git submodule '.submodules/Makefiles' to the latest version

Signed-off-by: Sebastien Varrette <sebastien.varrette@uni.lu>
Upgrading Git submodule 'resources/emacs.d/jimeh' to the latest version

Signed-off-by: Sebastien Varrette <sebastien.varrette@uni.lu>
Upgrading Git submodule 'resources/emacs.d/jwiegley' to the latest version

Signed-off-by: Sebastien Varrette <sebastien.varrette@uni.lu>
Upgrading Git submodule 'resources/emacs.d/larstvei' to the latest version

Signed-off-by: Sebastien Varrette <sebastien.varrette@uni.lu>
Upgrading Git submodule 'resources/emacs.d/magnars' to the latest version

Signed-off-by: Sebastien Varrette <sebastien.varrette@uni.lu>
Upgrading Git submodule 'resources/emacs.d/xiaohanyu' to the latest version

Signed-off-by: Sebastien Varrette <sebastien.varrette@uni.lu>
Update guide key

Signed-off-by: Sebastien Varrette <sebastien.varrette@uni.lu>
More bindings for magit

Signed-off-by: Sebastien Varrette <sebastien.varrette@uni.lu>
Update auctex

Signed-off-by: Sebastien Varrette <sebastien.varrette@uni.lu>
Add url for ruby setup

Signed-off-by: Sebastien Varrette <sebastien.varrette@uni.lu>
Update auctex

Signed-off-by: Sebastien Varrette <sebastien.varrette@uni.lu>