Added the html test/default root directory

Same files as in charasprite, intended solely for testing purposes.
Attempted to add source to nanohttpd.*.jar files

Attempt failed, will look into this further, later.
Added and updated jar files

Added net.synapsehaven.tiff.jar file.
Modified nanohttpd source file SimpleWebServer.java to make super-useful
private method registerPluginForMimeType *public*.  Why was this even
private to begin with?  How is that helpful for extending this class or
adding mime-type plugins on the fly?  Anyway...
Added Spritely.java, and modified with new plugin

Spritely.java now has an svg-file plugin, for serving image/svg+xml
mime-types.  Ah, and it also now exists to begin with.