Ported [3875] to 0.10-stable (''!WikiSystem page index speedup'')
Ported [3901] to 0.10-stable (''`[mimeviewer]` options doc fix'')
Fix some `[mimeview]` configuration option documentation. Closes #3926.
Follow-up to r3899, the 'filename' variable was not used.
Fix the ''confirm delete'' mode for attachments. Closes #3922.
Automated error reports: improve upon r3897 by respecting the newline in the rendered wiki table cell
Automated error reports: replace newlines by spaces in syteminfo values
Ported [3895] to 0.10-stable (''`restrict_owner` doc fix'')
Fix link in `[ticket] restrict_owner` configuration option documentation.
TracMercurial: fix the `MercurialNode.read()` operation. Closes #3903.
