• summary_page.php:
  Added "summary by project" when "all projects" is selected.
• core/summary_api.php:
  Created new function "summary_print_by_project".
• lang/strings_english.txt:
  Added string s_by_project.
• lang/strings_german.txt:
  Added string s_by_project.
• doc/Changelog:
  Added descriptions for summary_page fixes.

git-svn-id: http://mantisbt.svn.sourceforge.net/svnroot/mantisbt/trunk@2083 <a class="text" href="/?p=mantisbt.git;a=object;h=f5dc347c">f5dc347c</a>-c33d-0410-90a0-b07cc1902cb9