Define multiple dispatch functions for each service:
- spacemacs//java-setup-backend
- spacemacs//java-setup-auto-completion
- spacemacs//java-setup-syntax-checking
- spacemacs//java-setup-spell-checking
- spacemacs//java-setup-eldoc
java: replace ensime-configure-keybindings function by a variable
It's not convenient to have key bindings in funcs.el file, instead of relying
on a function we define a private layer variable java--ensime-modes which
can be updated by other layers using a :pre-config use-package hook.
java: refactor key bindings
- define key bindings for meghanada back-end
- move ensime key bindings documentation from scala layer to java layer
- change SPC m d for daemon to SPC m D (since SPC m d is reserved for debugging)