add fields in admin michanic index page

Completed job count
fake reviews count
phone number
empty field for mechanic earnings

and test, but it is not working because earning is empty in this commit
Merge branch 'master' into em-admin-page-mechanic-list-view

Conflicts:
	db/structure.sql
update test(remove comments)
Merge branch 'master' into em-admin-page-mechanic-list-view
Update columns in admin mechanics index
Merge pull request #76 from laudeego/em-admin-page-mechanic-list-view

Em admin page mechanic list view