Allow for images to be returned when features are extracted

Change-Id: I8fd5700ced2ad3051db1bb5f8e769beec81ab225
Updated matching method logging and made matching tutorial generic

Change-Id: Icc029043e4639e98f413f27ef6076e5d8040006d
Changed name of tutorials folder to applications. This folder will now house all client applications of TheiaxXx

Change-Id: Ie3626348a9ac9512ec89d13a3244c3fd49b6fc0e