FACES-1895 & FACES-1897

FACES-1895 Develop alloy:pickDate component (Changed timeZone attribute to type java.lang.String to disallow the passing of a TimeZone object directly because TimeZone is not thread safe. Removed unnecessary PickDateUtil.getObjectAsTimeZone() method, instead the thread safe TimeZone.getTimeZone() method can be called in its place.)
FACES-1897 Develop alloy:inputDate component (Changed timeZone attribute to type java.lang.String to disallow the passing of a TimeZone object directly because TimeZone is not thread safe.)