Merge pull request #9 from learning-layers/hotfix/guidelines

Add note about closing JIRA tickets.
Enable Bugsnag for the stable version.
Release v0.10.1.
Merge branch 'master-with-bugsnag'
Merge branch 'master' into review

Conflicts:
	app/build.gradle
	app/src/main/AndroidManifest.xml
	app/src/main/java/fi/aalto/legroup/achso/util/App.java
	gradle/wrapper/gradle-wrapper.properties