change commentTime to 12 hours format, add new getter variable for 24 hour format commentTime
change commentTime to 12 hours format, add new getter variable for 24 hour format commentTime

qiscus/qiscus-sdk-ios,qiscus/qiscus-sdk-ios,qiscus/qiscus-sdk-ios,qiscus/qiscus-sdk-ios,qiscus/qiscus-sdk-ios