Clean up SendDialog.java

mytracks_send_to_google.xml
- remove unused ids.
- rename id variables.
- set textSize to 18dip to fit "Google Fusion Tables".
- set margin in ScrollView because its height is 0dip
  and settings margins in its children have no effect.

SendDialog.java
- use ApiFeature.applyPreferenceChanges to commit preference changes.
- set myMapsGroup View to GONE when 'Google My Maps' is not checked.
- use Context.MODE_PRIVATE.
- onStop, call super.onStop first.

SignalStrengthSampler/.project

@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+	<name>SignalStrengthSampler</name>
+	<comment></comment>
+	<projects>
+	</projects>
+	<buildSpec>
+		<buildCommand>
+			<name>com.android.ide.eclipse.adt.ResourceManagerBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>com.android.ide.eclipse.adt.PreCompilerBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>org.eclipse.jdt.core.javabuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+		<buildCommand>
+			<name>com.android.ide.eclipse.adt.ApkBuilder</name>
+			<arguments>
+			</arguments>
+		</buildCommand>
+	</buildSpec>
+	<natures>
+		<nature>com.android.ide.eclipse.adt.AndroidNature</nature>
+		<nature>org.eclipse.jdt.core.javanature</nature>
+	</natures>
+</projectDescription>