Vasilis - While you are waiting, you may wish to read:
(if you have not already). I found that to be a helpful document in terms of coding style for Moodle projects. I should probably go back and re-read it myself. Also, I found:
helpful in terms of learning a bit about CVS. I'm not sure what IDE you use for programming; however, I have found Eclipse very helpful so you may wish to look at:
Thanks for sharing your code and creativity with the Moodle community. Please do not hesitate to let me know if you have any questions or how I might help facilitate things for you.
Peace - Anthony