distribute gstlal-ugly web visualization files with system packages.
I'm making a note here so I can make a quick change in the future before the next release.
Right now the files are located here and the user has to git clone and then change GSTLAL_WEBVIS_DIR to wherever those files are to generate plots and pages when running the offlines tutorial makefile.
Right now, a bunch of files from gstlal and gstlal-inspiral get packaged and installed to /usr/share/gstlal. I think we could install the web stuff there too, maybe under a subdirectory so people don't have to do a separate clone if they're running from system builds.
tagging @duncan.meacher, just cuz