paypal_donate 7.x-1.6

paypal_donate.install
- Added all supported currency codes by paypal
- Disabled paypal_donate_currency from displaying in content

paypal_donate.module
- Changed $array['safe_value'] to $array['value'] as text_list fields (currency field) can't be pulled using safe_value.
- Removed setting of paypal_donate_email if no value has been assigned as the email is now a required field (it will always be set).

Issues should be fixed with this commit:
1153214
1327114
1206402
1157686