Fixes for: 'MAINT-7588 Viewer takes 3 to 5 seconds to load TOS and styling...

Fixes for: 'MAINT-7588 Viewer takes 3 to 5 seconds to load TOS and styling different on redirecting page' and 'MAINT-7599 Reformat ToS 'Accept' label as a single string'.  The former's load time is improved by only asking for the HTTP header to check site is alive and then applying a specific CSS style to the page instead of relying on the CEF default (which appears to change often). The latter replaces the XUI checkbox label with a text box and adjusts it visually as necessary for enabled/disabled states