* Move almost all functions' parameter db.Engine to context.Context * remove some unnecessary wrap functions
* Fix commit status index problem * remove unused functions * Add fixture and test for migration * Fix lint * Fix fixture * Fix lint * Fix test * Fix bug * Fix bug
* Move db related basic functions to models/db * Fix lint * Fix lint * Fix test * Fix lint * Fix lint * revert unnecessary change * Fix test * Fix wrong replace string * Use *Context * Correct committer spelling and fix wrong replaced words Co-authored-by: zeripath <art27@cantab.net>