Changes to get tests running on Tor in Android as well

build.gradle - Added --enable-remote-debugging so I can actually debug the
test which is in JS

ProxyExtensionClient - Had to change logging to use native Android logging
because I couldn't include the SLF4J aar in crosswalk

Index.html - The paths were wrong so they couldn't work in Android (but
did work in Java), now fixed. Took me 3 hours to figure out this is why
nothing was working in Android. :(