tools: bundles to generate correct d3 version
UI: removes dependence on fonts.googleapis.com

* updates to serve fonts ourselves
* (closes #707)
UI: updates T&C wording

* (closes #715)
UI: updates text in "Terms of use" page

* (closes #715)
templates: fixes external "download" links

* adds correct urls for “downloads”
* updates spaces/gaps in “pre” tags
* fixes anchors
* (closes #725)
templates: anchors when user clicks on "Preview"
templates: display note via `787__n`

* (closes #622)
templates: reordering fields in Tools collections

* (addresses #663)
templates: displays '787_o' and '538_i'

* (addresses #480)
templates: updates 'computer_file_characteristics'

* correctly display all 'computer_file_characteristics' fields
* (addresses #480)