Increment to version 79, v2.4.0
Increment to version 79, v2.4.0

edx/edx-app-android,ahmedaljazzar/edx-app-android,edx/edx-app-android,edx/edx-app-android,edx/edx-app-android,edx/edx-app-android,ahmedaljazzar/edx-app-android,edx/edx-app-android