[supporter] amount limitation hack tip

Hi !

I noticed that supporter is limited to 900 for the billing amounts.

I've hardcoded it to go up to 2000, but could you handlle a simple option to setup the max amount and the counter (by 1/5/10/100) ?

Changes lines

1259 for ( $counter = 1; $counter <= 2000; $counter += 10) {
1288 for ( $counter = 1; $counter <= 2000; $counter += 10) {
1317 for ( $counter = 1; $counter <= 2000; $counter += 10) {

Correct ????

You think USD, for euros not a problem, but here in MAD, 1 euro=11 MAD so 900 MAD/1 year = less than 90 euros....

{and why not, a littlle currency change option to translate the frontend shown currency and translate it in gateway currency

/running
}