Fixed codelab link for Android Study Jam (#35)
Fixed codelab link for Android Study Jam (#35)

* Android Study Jam 2018 new page

* Changes from suggestions

* Fixed codelab links

WTMBerlin/wtmberlin.github.io,WTMBerlin/wtmberlin.github.io,WTMBerlin/wtmberlin.github.io,WTMBerlin/wtmberlin.github.io