[Feature] Update ToS to be more legally safe and sensible (#301)

- Improved ToS content
- Add ToS pointer and academic use note at signup
- Remove legal collection page (unnecessary)

Reviewed-on: enviPath/enviPy#301
Co-authored-by: Tobias O <tobias.olenyi@envipath.com>
Co-committed-by: Tobias O <tobias.olenyi@envipath.com>

epdb/urls.py

@@ -209,5 +209,4 @@ urlpatterns = [
     re_path(r"^contact$", v.static_contact_support, name="contact_support"),
     re_path(r"^careers$", v.static_careers, name="careers"),
     re_path(r"^cite$", v.static_cite, name="cite"),
-    re_path(r"^legal$", v.static_legal, name="legal"),
 ]