Since a8dba452 the search index didn't
properly index numeric words anymore, instead they were added as new
words to the word list each time they were indexed, leading to an
ever-increasing index size.

This reverts commit 32eed03c, reversing
changes made to 9e8bcd5f.

I accidentally hit the wrong button on github :-) This translation added
no new strings and should not have been merged.

Bi-directionality is generally a huge pain in the arm, browser vendors
only added a few improvements quite recently. This fix only works in
Mozilla and Webkit currently. Affected syntax was links and media and all
opening and closing syntax (e.g. code and del and various plugin syntax).

This fixes sending empty and duplicated To/Cc/Bcc, Subject and From
headers in the additional headers. The To-header in the additional
headers prevented mail sending on some systems.

Prevent table entry syntax swallowing multiple preceeding blank lines
(a) this shouldn't be necessary, blank lines are handled by paragraph
    processing
(b) avoids issues with greedy table syntax competing with plugins

script, which typically should not store their authentication cookies on
disk. However: 1st: DW cannot tell if an external script is in this
respect well-behaved. 2nd: it does not hurt to provide means for a
voluntary log-out.

There are, BTW, two parts of authentication data: one is stored in the
cookie-storage of the client, and the other part is stored in the
session data of the DW instance on the server. This logoff call is
responsible for invalidating the credentials stored on the server,
regardless of any cookie data remaining (or being stolen) on the client
side.