Allow spaces as thousands separator
Only set errors in edd_is_discount_active() if doing ajax
Merge pull request #2232 from ghost1227/issue/2230

Allow spaces as thousands separator
Prevent double update checks for add-ons
Merge branch 'release/2.0' of github.com:easydigitaldownloads/Easy-Digital-Downloads into release/2.0
Don't permit failed transaction URI to return empty
Apply discounts automatically if they are present in the URL and valid. #2237
More rigorous tests for currency formatting and separators. #2230
Don't save file download limit if it is the same as the global download limit. This allows for a download to have the same limit as the global limit but also for it to naturally inherit the global limit if the global is changed. Closes #2223