Add a show/hide toggle for new passwords in initial user creation and database access during install and setup process using the same model as on user profiles. Add a new password toggle script. Change setup config table to two columns, matching the install table layout.
Props xmarcos, matt, markjaquith, nazgul, akbigdog, intoxination, rob1n, MichaelH, empireoflight, rmccue, markoheijnen, r0uter, amansurov, bi0xid, DrewAPicture, Narthur, wpnook, markparnell, costdev, clorith, ryokuhi, sabernhardt, bgoewert, ironprogrammer, adeltahri, joedolson, mukesh27, audrasjb, sergeybiryukov.
Fixes#3534.
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