Fix 0002980: Escaping fixes are not applied to the bug history table.

• some other fixes to upgrades (see below).

M admin/upgrade_inc.php

• Some improvements for the "Print All" layout

M admin/upgrades/0_17_escaping_fixes_inc.php

• Added a fix for the double escaping of the history table.
• Added a fix to remove entries in the history there were
  added due to escaping errors rather than actual changes.

M admin/upgrades/0_17_inc.php

• Added "id" field to the bug history table.

M doc/ChangeLog

• Updated change log.

git-svn-id: http://mantisbt.svn.sourceforge.net/svnroot/mantisbt/trunk@1983 <a class="text" href="/?p=mantisbt.git;a=object;h=f5dc347c">f5dc347c</a>-c33d-0410-90a0-b07cc1902cb9