Merge pull request #1282 from ghost1227/master

Fix for #1250
Restore time() in class-wp-session.php. Apparently using current_time('timestamp') broke sessions
Fixed incorrect currency code. Closes #1288
Fix undefined variable. #1270 Props @abeel
Remove is_user_logged_in() from edd_has_user_purchased()
[i18n]>French and pot updates
Updated readme with campaign tracking links
Merge pull request #1296 from fxbenard/master

[i18n]> french and pot updates
Correct test mode check in edd_complete_purchase
Merge branch 'master' of github.com:easydigitaldownloads/Easy-Digital-Downloads
Add data-download-id to cart rows and make sure ID rows are unique. CLoses #1284
Change Download to Free Download. CLoses #1253
Correct wrong version number in readme
Fix incorrect redirect when selecting a payment method with ajax disabled and permalinks set to default. Closes #1290
Hide discount field is cart total is 0.00. Closes #1286
Check for status of publish, not complete. Closes #1277
Sanitize email subject with wp_strip_all_tags(). Closes #1283
Update param name to  and add to edd_Cart_item_price filter. Closes #1289
Clean up indention for edd_get_ip()
Fixed undefined index . #1270