Release of 1.9.7

Bugfixes
========
- Fixed a bug which caused that it was not possible to copy or move
folders
- Fixed several css errors
Security Bugfixes
=====================
- Fixed a bug which gave the possibility to copy/move/delete a file or
folder of another user
- Fixed several sql injection security problems
- Added additional check of $_SESSION informations to detect SQL
injections
- $_SESSION will be re-set on every page load to forbid changes via
manipulating the $_SESSION array
Feature additions
=================
- Added exist check for moving or copying
- Added JQuery support to display user messages
- Added new Setting Program_Enable_JQuery to control support of JQuery
- Added several user informations
- Added Program_Share_Anonymously to determine if the file displayname
gets displayed in the share link
- Added new icon set (Faenza)
- Added JQuery context menu on files and folders
- Added .htaccess file to avoid access on the global config file
- Added flag icons to change language at login (for the current session
- Added new configuration value Program_Share_Anonymously to determine
if the share links should contain the display name of the file
- Added mimetype detection
- Added third party libs folder /lib/ (shipping JQuery and JQuery UI)
Features removed
================
- Program_Path_Separator removed