Added a mechanism to keep track of already handled ChatMessages using a Set<Long>, added Timestamp to ChatMessage, dropped some FIXME comments into JSONChatConnection.
Merge branch 'vogel612' of https://github.com/Vogel612/JavaBot into Vogel612-vogel612

Conflicts:
	src/main/java/com/gmail/inverseconduit/JavadocDao.java
	src/main/java/com/gmail/inverseconduit/Main.java
	src/main/java/com/gmail/inverseconduit/chat/JSONChatConnection.java