Log Message:
Update py-moin to 1.9.3.
PR#43524 by Wen Heping.

Known main issues:

  * The GUI WYSIWYG editor has still some issues and limitations.
    If you can't live with those, you can simply switch it off by using:
    editor_force = True
    editor_default = 'text'  # internal default, just for completeness

Version 1.9.3:
  Fixes:
  * Fix XSS in Despam action (CVE-2010-0828).
  * Fix XSS issues (see MoinMoinBugs/1.9.2UnescapedInputForThemeAddMsg):
    * by escaping template name in messages
    * by fixing other places that had similar issues
  * Make moin compatible to werkzeug 0.5 .. 0.6.2 (1.9.2 had issues
    with xmlrpc when used with werkzeug 0.6.x).
  * MoinMoin.util.filesys: disable usage of dircache, deprecate dc* functions,
    because the dircache stdlib module can't work correctly for fast updates of
    directories.
  * rss_rc and sisterpages actions: fix Content-Type header (mimetype)
  * Fix associating OpenID identity with user, wasn't adapted to werkzeug yet.
  * openidrp auth: fix undefined _ (gettext)
  * Fix auth.cas and userprefs.oidserv request object usage.
  * highlight parser: fixed MoinMoinBugs/LineNumberSpansForProcessInstructionsMissed
  * Pygments syntax highlighting: add missing code files
  * Notifications: use same email subject format for every notification
  * Fix docbook formatter crashing, see \ 
MoinMoinPatch/IncludeMacroWithDocBookFormatter
  * Fix regex content search for xapian search.
  * Get rid of the empty line at the end of code highlights.
  * GUI editor: compute editor height like the text editor does.
  * Added help texts for: standalone server and moin migration.
  * script.maint.cleancache: clean also i18n cache files
  * Improved formatter.text_plain, see FeatureRequests/TextPlainFormatterRewrite
    (fixes many issues of this formatter).
  * text_html_text_moin_wiki: fixed index error for width="", see also:
    MoinMoinBugs/GUI_convertor_list_index_out_of_range
  * xmlrpc: disable editor backup for putPage, renamePage and revertPage
    because if pages get uploaded by xmlrpc then the draft cache file can
    rapidly increase in size, causing high memory usage because it needs to
    get loaded into memory for updating/processing.
  * Emit Content-Type header (with charset) for SlideShow action and many other
    actions that just call send_title().
  * ActionBase: better compatibility to moin 1.8, use request.values by
    default, optionally use request.form data only

  New features:
  * RenamePage action: added ability to create redirect pages when renaming
    (turned off by default, see show_rename_redirect config option).
  * formatter/text_html: Added line number links to code blocks.
  * diff action:
    * Fixed whitespace in generated (html) diff view table so white-space: pre
      can be used (and whitespace in diffs preserved).
    * Added links to first/last revision.
  * MoinMoin.widget.browser: introduced feature for sorting tables, see:
    http://moinmo.in/FeatureRequests/SortableTables
  * SystemAdmin user and attachment browsers: sorting feature used there now
  * Scrolling the text editor to the double clicked line.
  * Enable double-click-editing by default.
  * WikiConfigHelp macro: make heading and description display optional,
    heading level as a parameter (default 2)
  * If edit ticket check fails, send the editor with the current content.
  * moin import wikipage - use this script to import local files as a wiki page

  Other changes:
  * upgraded pygments from 1.2.2 to 1.3.1
  * upgraded FCKeditor from 2.6.4.1 to 2.6.6
  * added configuration snippet for ldap authentication against 2 servers
  * improved script help output