Fixes #163 Wrong face in `term` when changing default spacemacs theme

Update solarized and fix the term faces.
Remove evil-org-mode submodule
Fixes #165 evil-org mode submodule

Remove the evil-org submodule in favor or MELPA package.
Adapt the new bindings to spacemacs in configuration.
Update magit quick use case guide with last key bindings
Wrap key bindings with <kbd> in documentation
Merge branch 'develop' (v0.19.0)