Update and cleanup tools folder

In-Portal has "tools" folder in it's installation folder.

Right now it contains:

• shell scripts
• php scripts
• example configuration file

Here I will be telling about example configuration files:

• config.php-dist - example of config.php file, that can be placed under /system/ folder;
• debug_sample.php - example of debug.php file, that can be placed under /system/ folder.

There are 2 problems with these files:

1. file naming is inconsistent - there should be either -dist (or something other) in both files;
2. config.php-dist is quite old and is looks like INI file, while right now we use PHP format.