Revert "Changed driver to webkit on one of the tests."

This reverts commit 6de09714ccefc00c346d8f1f3dcd96a4a3cca976.
Revert "change driver to selenium on 'petitions an admin user can send a preview email to herself'"

This reverts commit cad1a23fba1abcd3eea9c26351644edb5590981f.
Revert "general bootstrapification on petition page/nav/footer, including removal of ui experiments and unused code"

This reverts commit 423025959fafde7f842a116f42189d50ce49bc5b.
Revert "change tests to run in webkit"

This reverts commit beed7f2a59b729955e82ca4bd0610c8814cbf01f.