feature: improve quick stage
feature: improve quick stage

- better status display "x files staged"
- add "git: commit" to allow quick staging to become quick commiting

jmanuel1/GitSavvy,asfaltboy/GitSavvy,stoivo/GitSavvy,asfaltboy/GitSavvy,stoivo/GitSavvy,jmanuel1/GitSavvy,ddevlin/GitSavvy,divmain/GitSavvy,ralic/GitSavvy,dreki/GitSavvy,ralic/GitSavvy,divmain/GitSavvy,dvcrn/GitSavvy,theiviaxx/GitSavvy,dreki/GitSavvy,stoivo/GitSavvy,divmain/GitSavvy,theiviaxx/GitSavvy,ddevlin/GitSavvy,dvcrn/GitSavvy,asfaltboy/GitSavvy,ddevlin/GitSavvy