loongson/pypi: links for flask-assetrev

loongson/mirror Flask-AssetRev-1.0.4.tar.gz
loongson/mirror Flask-AssetRev-1.0.3.tar.gz
loongson/mirror Flask-AssetRev-1.0.2.tar.gz
loongson/mirror Flask-AssetRev-1.0.0.tar.gz