chore(travis): rearranged the build file, switch from jdk7 to oracle 7
chore(travis): rearranged the build file, switch from jdk7 to oracle 7

laurentpetit/ccw,noncom/ccw,ccw-ide/ccw,ccw-ide/ccw,ccw-ide/ccw,noncom/ccw,laurentpetit/ccw,noncom/ccw,laurentpetit/ccw