add missing standard classes for .shop_table th

this probably needs further work to also add respective classes to td's
add missing standard classes for .shop_table td
Do not use wpdb->prepare without param arg. Closes #1717

Starting WordPress 3.5, wpdb->prepare should always have a second param
to discourage improper use:
https://core.trac.wordpress.org/changeset/22429 props @spencerfinnell
Typo in spanish translation file, closes #1811
Merge pull request #1823 from lkraav/master

form-pay.php: add missing standard classes for .shop_table {th,td}
__x should be _x. Closes #1820

Thanks @a1ur3l, you were right!
Filter to provide icon to COD. Closes #1831
Factory tweak
textarea desc_tip Closes #1825.
Save number/email Closes #1828.
Notices. Closes #1805.
wrong meta name Closes #1812.
Stripped rest of wpdb->prepare calls without args #1717
Settings API Tweaks + new types. Closes #1824.
removed settings used for testing
Save attributs via ajax and refresh variations. Closes #1804.
'woocommerce_matched_rates' filter on get_rates()
Romanian translation - completed

Complete the Romanian translation with the new strings from the last
time. i didn`t translate 1 string, because i didn`t understand well the
context.

Also i have corect some strings from the previous translate
Add address to customer session. Closes #1836
Merge pull request #1840 from a1ur3l/master

Upate Romanian translation