PHPoto 0.4.3 released

Changes in PHPoto 0.4.3:
The installation script should work again! I forgot to change an obsolete variable in the last release that determines whether or not the installation form is displayed, but it's fixed now.

Also, calls to DB::escapeSimple() have been replaced with mysql_escape_string() for now because many servers use older version of PEAR DB (before DB 1.6) which do not support escapeSimple().

Changes in PHPoto 0.4.2:
PHPoto no longer requires write-access to the temporary upload directory.

Fixed extension-checking for uploaded files. BMP files are no longer supported for the time being (they weren't working before anyways...)

Lots of developer documentation added. See the /doc folder for generated developer documentation by phpDocumentor.

Changes in PHPoto 0.4.1:
A bunch of small bugfixes.