Merge pull request #978 from fxbenard/master

[i18n] > french.po.mo and edd.pot and typo correction
Fixed output format for XML on sales query. #857
Round edd_purchase_total_of_user()
Merge branch 'master' of github.com:pippinsplugins/Easy-Digital-Downloads
Changed customer to customers. #857
Added key key to sales query. #857
Ensure  var is set. #857
Fixed paging and per_page on get_recent_sales(). #857
Return null instead of false if no fees with edd_get_payment_fees()
Fixed indention. #857
Fixed XML syntax error for products query. #857
Fixed 'all' queries for product stats
Ensure start date is earlier than enddate. #857
Round edd_get_earnings_by_Date()
Tweaks to checkout CSS
Improvements to edd_process_download
Added totals to stats earnings/sales. #857
Changed total to totals. #857
Added new symlink functions for getting symlink URL and paths, also scheduled symlink cleanup. #786
Added new edd_deliver_download() function. #786