This commit adds two configuration variables to the slack layer allowing a user
to customize the name and keybinding of the slack custom layout, following the
conventions from the erc and mu4e layouts.
The only readily available keybinding for joining channels in slack is for
joining public channels. This commit adds bindings for joining private
channels, (called groups in emacs-slack) as well as a keybinding for
slack-select-rooms which allows joining a channel, group, or DM.
This commit also rebinds the major mode `k` to slack-select-rooms, which puts it
more in line with how the related keybinding in the slack client works.
- Apply `/` and `//` rules (double / is for private functions)
- Add missing `spacemacs/` prefixes
- Move functions used outside of spacemacs-base layer to
core/core-funcs.el
- Remove unused functions
Commit originally intented to only rename linum-update-window-scale-fix
to spacemacs/linum-update-window-scale-fix :-)
