Rename hints (admin area)

[AndreiMaz]

"Admin.Configuration.AppSettings.Common.PermitLimit.Hint" should be "Maximum number of permit counters that can be allowed in a window (1 minute). Must be set to a value > 0 by the time these options are passed to the constructor of FixedWindowRateLimiter. If set to 0 then the limitation is off"

"Admin.Configuration.AppSettings.Common.QueueCount.Hint" should be "Maximum cumulative permit count of queued acquisition requests. Must be set to a value >= 0 by the time these options are passed to the constructor of FixedWindowRateLimiter. If set to 0 then the Queue is off"