Added new features for captcha element:
Added new features for captcha element:

- font : defines path to the font you want to use on captcha
- font-size : defines font size, default is 12
- font-color: defines color of the font, available font colors are: black, green, blue, white, red, pink, orange, yellow.

git-svn-id: cc6bf778016782145e08f50c22fd3532de014314@188 eaaf3d48-7251-11de-8585-3f51e31374b7

darkredz/DooPHP,darkredz/DooPHP