ScrumChatter: added app
This is my first attempt at adding an app to F-droid.
For info, this is the app on the Play Store Console: https://play.google.com/store/apps/details?id=ca.rmen.android.scrumchatter
This app is built with ant.
The Scrum Chatter repo has a libs/ directory with jxl-2.6.12.jar. I saw some other app files in fdroiddata/metadata that retrieved dependencies like this from the website hosting the jar (ex: sourceforge.net). I wasn't sure if this was mandatory, but I did this also for Scrum Chatter. If it had been possible to just use the jar in libs/ as-is, I probably would have done this.