Put back java7 building in Travis CI because javadoc stylesheet problem is gone.
Put back java7 building in Travis CI because javadoc stylesheet problem is gone.

windofthesky/mockito,zorosteven/mockito,geoffschoeman/mockito,stefanbirkner/mockito,huangyingw/mockito,stefanbirkner/mockito,mkordas/mockito,diboy2/mockito,lukasz-szewc/mockito,mohanaraosv/mockito,icefoggy/mockito,mockito/mockito,diboy2/mockito,MuShiiii/mockito,ignaciotcrespo/mockito,Jazzepi/mockito,bric3/mockito,Jam71/mockito,mohanaraosv/mockito,ignaciotcrespo/mockito,bric3/mockito,Ariel-Isaacm/mockito,rototor/mockito,mbrukman/mockito,mkordas/mockito,LilaQin/mockito,geoffschoeman/mockito,smarkwell/mockito,Jam71/mockito,hansjoachim/mockito,rototor/mockito,alberskib/mockito,hansjoachim/mockito,JeremybellEU/mockito,alberskib/mockito,GeeChao/mockito,LilaQin/mockito,ze-pequeno/mockito,ze-pequeno/mockito,GeeChao/mockito,TimvdLippe/mockito,smarkwell/mockito,icefoggy/mockito,lukasz-szewc/mockito,Jazzepi/mockito,bric3/mockito,JeremybellEU/mockito,zorosteven/mockito,mockito/mockito,terebesirobert/mockito,MuShiiii/mockito,Ariel-Isaacm/mockito,mockito/mockito,TimvdLippe/mockito,mbrukman/mockito,windofthesky/mockito