alpha1.3

加了selfJudge.html，和submit.html。
加了图片blue.png
blue.css
加了bootstrap.min.csss
Revert "alpha1.3"

This reverts commit 28be92e1909192fad11e9e205b2250e7ab83081b.
Revert "Revert "alpha1.3""

This reverts commit 10d036511a91810e7df13209efa6e37a105245e9.