New: Added states for Spain
Modified Araba state name
Fixed text domain
Array align
Fixed bug 2733

* Ref. https://github.com/easydigitaldownloads/Easy-Digital-Downloads/issues/2733.
Merge remote-tracking branch 'upstream/master'
Rewritten check on "zero price" cart items

* Check now conforms to EDD standards.
[i18n]> Typo correction
[Grunt]> bump wp-i18n to 0.4.9
Edit gruntfile to include pot headers based on that
[i18n]> update pot with "grunt makepot"
[i18n]> update 92 languages files from Transifex with "grunt tx"
[i18n]> Add 2 new languages files
Merge pull request #2740 from fxbenard/master

[i18n] > update for 2.1.8
Updated plugin updater class
Better gateway handling in edd_send_to_success_page()
Merge branch 'master' of github.com:easydigitaldownloads/Easy-Digital-Downloads
Move  below last  calc to fix #2746
Add thrid parameter for  to edd_is_discount_valid(). Might fux #2682
Merge branch 'master' of github.com:easydigitaldownloads/Easy-Digital-Downloads
Remove download_id and options from edd_apply_preset_discount #2682