adds swipe transmitions between screens in android version

Jira issue: APPPARTY-26
- improve swipe logic and integrate with regular buttons.
- separate funnel and current collection in two different screens

Jira issue: APPPARTY-26
add swipe event to switch between screens

Jira issue: APPPARTY-26
Add media types and optimize for mobile use

Jira issue: APPPARTY-26
fix links to recourses (swipe events moved to lib)
add fork_banner.png

Jira issue: APPPARTY-26
Merge pull request #5 from eelcocramer/APPPARTY-26-changes-from-arno

Improves interface on Android

Jira issue: APPPARTY-26