New plugin 'common-aliases' for optional cutting edge zsh aliases

Signed-off-by: Gaetan Semet <gaetan@xeberon.net>
Better super-grep

Signed-off-by: Gaetan Semet <gaetan@xeberon.net>
Merge pull request #1866 from Stibbons/gsemet_push_common_aliases

New plugin 'common-aliases' for optional cutting edge zsh aliases