issue2550919 - Anti-bot signup using 4 second delay Took the code by erik forsberg and massaged it into the core. So this is no longer needed in the tracker. Updated devel and responsive trackers to remove timestamp.py and update input field name. Docs, changes and tests complete. Hopefully these tracker changes won't cause an issue for other tests.

[run]

# ignore the dist utils. They are not part of the code base
# we are going to test. They are used by maintainers only.
omit = roundup/dist/*