Fix issue where some files were not included in jshint task, drop grunt (except for grunt bump)
Fix issue where some files were not included in jshint task, drop grunt (except for grunt bump)

hliu0615/angular-bootstrap-datetimepicker,liqingzhu/angular-bootstrap-datetimepicker,arathael/angular-bootstrap-datetimepicker,rcrodrigues/angular-bootstrap-datetimepicker,hungdoan2/angular-bootstrap-datetimepicker,rmulder/angular-bootstrap-datetimepicker,hliu0615/angular-bootstrap-datetimepicker,edouard-lopez/angular-bootstrap-datetimepicker,asabirov/angular-bootstrap-datetimepicker,rmulder/angular-bootstrap-datetimepicker,marvinlee/angular-bootstrap-datetimepicker,liqingzhu/angular-bootstrap-datetimepicker,Coralma/angular-bootstrap-datetimepicker,ayinloya/angular-bootstrap-datetimepicker,arathael/angular-bootstrap-datetimepicker,marvinlee/angular-bootstrap-datetimepicker,dalelotts/angularjs-bootstrap-datetimepicker,Vivify-Ideas/angular-bootstrap-datetimepicker,asabirov/angular-bootstrap-datetimepicker,ayinloya/angular-bootstrap-datetimepicker,edouard-lopez/angular-bootstrap-datetimepicker,dalelotts/angular-bootstrap-datetimepicker,dalelotts/angular-bootstrap-datetimepicker,hungdoan2/angular-bootstrap-datetimepicker,Vivify-Ideas/angular-bootstrap-datetimepicker,trence/angular-bootstrap-datetimepicker,dalelotts/angularjs-bootstrap-datetimepicker,dalelotts/angular-bootstrap-datetimepicker,Coralma/angular-bootstrap-datetimepicker,trence/angular-bootstrap-datetimepicker,rcrodrigues/angular-bootstrap-datetimepicker