Merge branch 'dev-coursedetail-0817' of http://192.168.110.53/com.pica.cloud.education.frontend/pica-professional-exam into dev-coursedetail-0817

* 'dev-coursedetail-0817' of http://192.168.110.53/com.pica.cloud.education.frontend/pica-professional-exam:
  修改头像加载错误
  修改课件样式
  修改文件路径
  测试pdf

# Conflicts:
#	src/utils/env-config.js