Allow passing timer names to all libraries that create timers

[rkoshak]

This impacts:

• [x] countdownTimer
• [x] deferred
• [x] gatekeeper
• [x] loopingTimer
• [x] timerMgr

Note, some of the above depend on timerMgr so that should be done first.

The behavior should be as follows:

• offer an options argument when creating a timer to provide a timer name
• if the name is not provided, use ruleUID or perhaps a combo of ruleUID and key in cases where a key is provided (e.g. timerMgr)
• if ruleUID isn't defined use key
• if 'ruleUIDand 'key are undefined, use the name of the library (e.g. "TimerMgr")

I think it might be best to centralize the creation of the actual timers to a utility function so we don't have to reproduce the above logic over and over again.