add a view helper to format datetime
add a view helper to format datetime

Coursemology/coursemology2,Coursemology/coursemology2,BenMQ/coursemology2,xzhflying/coursemology2,cysjonathan/coursemology2,harryggg/coursemology2,Coursemology/coursemology2,Coursemology/coursemology2,xzhflying/coursemology2,cysjonathan/coursemology2,harryggg/coursemology2,Coursemology/coursemology2,BenMQ/coursemology2,cysjonathan/coursemology2,Coursemology/coursemology2,Coursemology/coursemology2,harryggg/coursemology2,xzhflying/coursemology2,BenMQ/coursemology2