rework data download include-map directive to work on ie9
fix main page background gradient in firefox; closes #28
use xdomain as a CORS polyfill for IE<=9; fixes #30
Merge branch 'data-download-ie9-fix'
data catalog: change boundary/index -> boundary/grid-indices; closes #34
render tags as list in data-catalog-entry pages; closes #36
cln: use existing splitKeys option for tag splitting
Changed more file names, other stuff
Merge branch 'master' into catalogImages

Conflicts:
	content/data-catalog.csv
	scss/tnris.scss
	templates/data-catalog-entry.html