Merge pull request #69 from phuonghuynh/master

Update changes
Merge pull request #70 from chrisshayan/Release8

Release8
make pie chart change data when database changed
Merge commit 'e69b3fcdf360c23ed34e2bcb826843df600babcf'
Merge commit '7ba9e3fe51fa264037b087f404d3c1af20a11f9e'