function getKeyword(name) {
						var aliases = prefs.getDict('css.keywordAliases');
						return name in aliases ? aliases[name] : name;
					}
Finds available vendor prefixes for given CSS property.
Search is performed within Can I Use database and internal
property list
@param  {String} property CSS property name
@return {Array} Array of resolved prefixes or null if
prefixes are not available for this property at all.
Empty array means prefixes are not available for current
user-define era