2、登录页图标
3、工具栏唤起方式改为单机
4、学习报告间距调整

This reverts commit 466e09f9.

# Conflicts:
#   lib/utils/constants.dart

Test

查看合并请求 kiwitap/zijing-app!13

Test

查看合并请求 kiwitap/zijing-app!12

# Conflicts:
#   lib/utils/constants.dart