Added description entries for the teacher email entries that I previously forgot to include.
internationalized preview project list page, which is accessible from the main homepage.
Merge branch 'master' of https://github.com/WISE-Community/WISE-Portal

# By geoffreykwan
# Via geoffreykwan
* 'master' of https://github.com/WISE-Community/WISE-Portal:
  Added description entries for the teacher email entries that I previously forgot to include.