master: started move from mysql to pdo for userlist.php, small typo fix in basic_functions.php
master: finished move userlist.php
master: moved pdo for basic_functions.php
master: move pdo for user.php
master: move pdo viewlist.php, cleanup in user.php
master: move pdo for view.php
master: move pdo for topiclist.php
master: move pdo for topic.php
master: move pdo for resultlist.php
master: fixed typo
master: move pdo for result.php
master: move pdo for sessionlist.php
master: move pdo for session.php
master: move pdo for sessiontopic.php and sessiontopiclist.php
master: move pdo for statistic.php
master: move pdo for index.php
master: db_functions.php removed for pdo move