Add favorites/reblogs lists and extended footer for ThreadFragment

closes #41, closes #64

mastodon/src/main/res/drawable/bg_text_button.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ripple xmlns:android="http://schemas.android.com/apk/res/android" android:color="?android:attr/colorControlHighlight">
+	<item android:id="@android:id/mask">
+		<shape>
+			<solid android:color="#000"/>
+			<corners android:radius="4dp"/>
+		</shape>
+	</item>
+</ripple>