This commit and the following one is to test whether permissions are set correctly on pull
fix logistic page ancor navigation bug
11:59pm
new slides
Merge pull request #1 from IntroHCI/yu_xia_dev

fix logistic page ancor navigation bug
Merge branch 'master' of https://github.com/IntroHCI/website
Merge branch 'master' of https://github.com/IntroHCI/website
Changed lab submission time and Jingshu's office hours.