Update version of the Android gradle plugin to 1.2.3
Update version of the Android gradle plugin to 1.2.3

shaunkawano/Qiitanium,hejunbinlan/Qiitanium,shaunkawano/Qiitanium,a19920714liou/Qiitanium,pomelolee/Qiitanium,Godchin1990/Qiitanium,ogaclejapan/Qiitanium,a19920714liou/Qiitanium,pomelolee/Qiitanium,hejunbinlan/Qiitanium,Godchin1990/Qiitanium,ogaclejapan/Qiitanium