[views] remove breadcrumbs usage to retrieve last visited page
Use JavaScript history.back to go to the last visited page. Rename
_return_to_lastpage to _redirect as it becomes misnamed.
Drop `test_redirect_default` test in `unittest_views_basecontrollers`
which essentially tested this (now removed) breadcrumbs "feature".
Closes #5456850.
\.svn
^build$
^dist$
\.egg-info$
^.tox$
\.pyc$
\.pyo$
\.bak$
\.old$
\~$
\#.*?\#$
\.swp$
^doc/book/en/apidoc$
\.old$
syntax: regexp
.*/data.*/database/.*\.sqlite
.*/data.*/database/.*\.config
.*/data/database/tmpdb.*
.*/data/ldapdb/.*
.*/data/uicache/
.*/data/cubes/.*/i18n/.*\.po
^doc/html/
^doc/doctrees/
^doc/book/en/devweb/js_api/
^doc/_build
^doc/js_api/
data/pgdb/
data.*/pgdb.*