added optimizerpi.sh script
Adjust condition for return link.
Merge pull request #776 from wangguan59/back_page

Back link condition in exercise page
Merge branch 'develop' of github.com:learningequality/ka-lite into optimize-rpi-script
moved optimizerpi to scripts
a few updates based on comments to optimizerpi.sh
Merge pull request #761 from mrshu/optimize-rpi-script

Added optimizerpi.sh script
Copy-paste error prevented exercise and video logs from working.
Merge branch 'develop' of github.com:learningequality/ka-lite into develop
Added i18n documentation; updated the i18n management command to reflect some changes.
Merge branch 'release-0.10' of github.com:learningequality/ka-lite into develop
Merge pull request #786 from dylanjbarth/i18n_hackathon

Added i18n documentation and starting places for Stanford hackathon
Hopefully better docs for hackathoners.
Merge pull request #790 from dylanjbarth/i18n_hackathon

Hopefully better docs for hackathoners.
Hopefully better docs for hackathoners.
Merge branch 'i18n_hackathon' of github.com:dylanjbarth/ka-lite into i18n_hackathon
Merge pull request #791 from dylanjbarth/i18n_hackathon

I18n hackathon
Update I18N.md
Adding a hardcoded banner to kalite landing page to announce hackathons this weekend. Temporary fix to what will eventually be database driven.
Oops - changing IBM to Intel…