* new version of naw_securedl
   * contains backend module which lists the used traffic
   * logs also the sice of a file downloaded (only the original size, not the transmitted size)
   * rename xclass file to get rid of the em warning
   * move logging to a place whrer we can be sure the file really exists
   * whitespace cleanups
   * rename fieldnames of log-table and add more fields
 * add changelog
 * update manual
 * only enable backend module, when logging is enabled
 * add log and file objects for future use (not usable yet)
 * increase version number in trunk
 * fix sum of bytes for "all users"
 * initialize variables
 * implement a table view for traffic
 * increase version number
 * refactor SQL conditions to use arrays
 * minor improvments
 * use hash_hmac to generate the hash
* add check for readfile function (may be removed again, when securedl is made dl-manager compatible)
 * do not log the download if user aborted the connection
 * version 1.3.0
added htm und html Dateien:

case '.htm':
case '.html':
 $contenttypedatei = 'text/html';
 break;
 * add hook requested by Marco Huber (Marit AG)
 * update changelog
 * add readfile_chunk and the possibility to choose the desired output method
 * cleanup for a possible release
 * remove the force logging feature, log always (0 bytes at first)
 * add possibility to log only the chunks transmitted
 * minor cleanup
 * fix stupid bug
 * increase version number to 1.4.0
 * fix another stupid bug, insertid needs to be stored only after insert
 * add changelog entry for didi