Decreases jank/speeds image loading in filmstrip.

Adds Glide, an image loading library, to handle image caching and bitmap reuse.
This is working, but there are still some significant todos:

1. We're loading larger images than we need.
2. We're not aggressively cancelling loads so if you scroll far
  it takes longer than necessary for the image to appear.
3. Video thumbnail loading is slow (will require changes to Glide to improve).

Change-Id: I01387429068451b923509f78c6d5f8ce115e74ad
diff --git a/Android.mk b/Android.mk
index 8779081..4f18789 100644
--- a/Android.mk
+++ b/Android.mk
@@ -6,6 +6,7 @@
 
 LOCAL_STATIC_JAVA_LIBRARIES := android-support-v13
 LOCAL_STATIC_JAVA_LIBRARIES += xmp_toolkit
+LOCAL_STATIC_JAVA_LIBRARIES += glide
 
 LOCAL_SRC_FILES := $(call all-java-files-under, src)
 LOCAL_SRC_FILES += $(call all-java-files-under, src_pd)