update lang and Css
Update lang and Css
update install.inc

adding a field in the table downloads_cat on install.inc
update NK_functions

add new function nkInitRequest() to check $_REQUEST
rename function nkVerifyUrl() to nkfunction nkVerifyUrl()
update nkModsPrefs()
update module download
Merge pull request #14 from Maxxxi/master

update download module and install