New language file

One single file that includes translation strings for Sell Media and
all its current extensions.
Added currency support

Support for Malaysia Ringgits, Philippine Peso and Turkish Lira.  Those
currencies are already part of core options but were missing in the
cart script causing JS conflicts.
List all collections shortcode layout bug fix
PayPal POODLE vulnerability fix
Merge branch 'dev' of github.com:graphpaperpress/sell-media into dev
upgrades link, promos, settings help text for PayPal
settings sidebar
Settings layout and copy changes
translation update
translation instructions
readme update
Merge branch 'dev'