Add a convenience function to call htmlspecialchars() with Habari-appropriate parameters. We won't have to write ENT_COMPAT, 'UTF-8' anymore.
Add a convenience function to call htmlspecialchars() with Habari-appropriate parameters. We won't have to write ENT_COMPAT, 'UTF-8' anymore.

git-svn-id: d0e296eae3c99886147898d36662a67893ae90b2@4121 653ae4dd-d31e-0410-96ef-6bf7bf53c507

dragonmantank/Habari,dragonmantank/Habari,dragonmantank/Habari