(bug 5170) Create single request-cache.

Future goal: consolidate all separate request-cache items.
(bug 4062) Allow other random character sets in rand_chars
(bug 5171) Create custom XMLRPC transport that supports DW::Request
Update documentation to reflect new name of styleview priv.
Merge pull request #482 from kareila/bug5144-privlist_hook

Bug 5144 - Update documentation to reflect new name of styleview priv.
Fix input argument sanitization

The s2id argument wasn't properly sanitized, so if you passed text in,
later codepaths would complain about non-numeric inputs. This ensures
that s2id is numeric before we use it.
(Bug 5118) Fix conflicting colors in Angel Cake themes
(Bug 5179) Add additional link color props to Ciel

Active/hover/visited link props for entry management links,
entry interaction links, and navigation module links.
(Bug 5095) Fix conflicting link/background combos in Hot Chocolate for Ciel
(Bug 5179) Standardize new prop names
(Bug 5179) Change CSS refs to new standardized props
(Bug 5179) Don't overwrite properties already in use on live
(Bug 5179) Sort link CSS by standards
(Bug 5177) add margin to ctxt popups userpics
-- also alphabetize props
(Bug 5176) correct display of credit module in wide open
-- display inline
-- fix margins and padding
(bug 5180) Fix warning in merge view
Merge pull request #490 from anall/feature/bug5180

(bug 5180) Fix warning in merge view
(bug 5183) Handle feeds that require Accept-Encoding
Update worker-manager to use extlib

EOM.
Revert OpenID upgrade changes

We had to revert the version of the OpenID modules we used so that we
would again be compatible with LJ et al.