changed bandcamp to support "tracks."  added one test case.
sample implementation:  invalid embeds highlight in red, in UI pulldown.
added support for bandcamp worpress "embed" code.  added 1 test for this embed type.
removed unused "<a ...</a>" link from middle of bandcamp's iframe-rendering template
added support for soundcloud 'wordrpress' embed types.  Added one (valid) test case.
remedy problems w/ early MSIE:  switch to jquery 1.9.1; use jq selectors instead of getElementById
moved unused libs.
moved (html) implementations into new directory.
fixed css/js linking, for moved files.