initial work for improving the scroll
removes .gradle from version control
remove build directory from git
update gitignore
slightly better image handling for medium res devices
Merge branch 'improveImageInteraction'

Conflicts:
	.gradle/1.6/taskArtifacts/fileHashes.bin
	.gradle/1.6/taskArtifacts/fileSnapshots.bin
	.gradle/1.6/taskArtifacts/taskArtifacts.bin
	.idea/workspace.xml
	MobileDoppler/build/incremental/dex/debug/inputs.data
	MobileDoppler/build/libs/MobileDoppler-debug.dex
	MobileDoppler/build/manifests/debug/AndroidManifest.xml