moved to php dir

all php files are now in the php subdirectory
added getNewDataTest.php

to test post method
now reads JSON

index.html can now plot data from the database as well
changed to GET

I finally figured out how to change variables and correctly query the
database using d3 and php. This involved changing the php script to use
the GET method rather than the POST
removed ajax call

This is no longer needed. The php script is called within the d3 json
method
now plots both errvel and mnvel

I figured out how to make it correctly display different variables upon
div clicks