Tweaks to Customize interface. Set custom-reset-button-menu to t.

Tweaks to Customize interface.  Set custom-reset-button-menu to t.

* cus-edit.el (custom-commands, custom-reset-menu)
(Custom-reset-standard): Tweak labels.
(custom-reset-button-menu): Change default to t.
(custom-buffer-create-internal): For the custom-reset-button-menu
case, put the revert button first.
(custom-group-subtitle): New face.
(custom-group-value-create): Align docstring to a specific column.

* wid-edit.el (widget-documentation-link-add): Don't handle
indentation in this function.
(widget-documentation-string-indent-to): New function.
(widget-documentation-string-value-create): Use it.

* autorevert.el (auto-revert):
* epg-config.el (epg):
* ibuffer.el (ibuffer):
* mpc.el (mpc):
* ses.el (ses):
* eshell/eshell.el (eshell):
* net/ange-ftp.el (ange-ftp):
* progmodes/ebnf2ps.el (postscript):
* progmodes/flymake.el (flymake):
* progmodes/prolog.el (prolog):
* progmodes/verilog-mode.el (verilog-mode):
* progmodes/which-func.el (which-func):
* textmodes/picture.el (picture):
* textmodes/tildify.el (tildify):
* vc/ediff.el (ediff): Tweak defgroups to improve presentation in
customization buffers.