tokengenerator,dbprovider,loginhandler

i write a tokengenerator,a dbprovider,and a loginhandler,the mariadb has
not download,so i can't write the dbprovider unit test an login unit
test. i will write the tes other days.
Revert "tokengenerator,dbprovider,loginhandler"

This reverts commit ba0250c567bd53e5e6d6ae6b539f95ca510c6299.