Various minor fixes, enhancements, and additions

Fixed problems with deserializes certain kinds of replies
Started a class for standard errors (Error.cs)
Added couple more constructors for AckNak
Added logging into AgentInfo.cs
Change default min for agents to 20 from 25
Various fixes and enhancements

Finished implementation of the protocols that start with a GetResource message
Fixed problem with ending and restarting a game.
Fixed another refresh problem.
Merge branch 'master' of https://github.com/swclyde/USU_CS5200_SP14_BSvsZP