Add Polish translation
Merge pull request #111 from x10d/pl-translation

Add Polish translation. Thanks Sidnet
Name field default value is now a language string
update changelog for 1.3.1
Update to 1.3.1
Add 1.3.1 SQL Update files
updated 1.3.1 changelog language string
updated 1.3.1 changelog language string
Use more secure method of getting the post array
Update mod_shoutbox.php
Use a placeholder for the name field

Also makes name attribute required
Implement PHP check for empty shout name
Add comment for empty name check
Update changelog
Update version in xml file
Add 1.4.0 SQL file
Add 1.4.0 SQL file
Update changelog.php
Update lang string for 1.4.0
Update lang string for 1.4.0