More srweb spelling fixes

Ignore old news files and third-party libraries.

Patch Set #3: Undo changes to external, vendored files

Change-Id: I693e312987d80208a60f89eb447891bba39522a9
Fix typod root_uri property access

This appears to have been on the page since the headings were made
into links. Previously Smarty was presumably swallowing this, but
now errors about it.

Change-Id: Iff3dda80d4b2834c9cb490caa7a68f13832026ca