Update index.php

Comments about error coming from setting PHP Directive Display Errors to ON
Initializing arg1, arg2, ...arg9 ='' may be useful to avoid this problem when calling the API from a script
Error logic may break when you get this notifies on the response
Changed cmd  Query on Api index.php

To avoid  "Notice : undefined variables " changed the way the cmd query
is built by validating each argument Not empty into the cmd command
string
Changed cmd Query on Api index.php

To avoid  "Notice : undefined variables " changed the way the cmd query
is built by validating each argument Not empty into the cmd command
string  (update)
Rusian languaje on Search page

Comented  Set Locale ru_RU.utf8 , now  is on the correct languaje
setting
Merge pull request #181 from estratos/master

Changed cmd Query on Api index.php