JIRA cron scheduler is not running based on the fixed time range

User's description:

> basically, when you're configuring it for "every 15 minutes from 2:00pm to 4:00pm",
> it really should be reading "every 15 minutes from the 14th hour THROUGH the 16th hour of the day"(which would be 2:00pm to 4:59pm)
>Therefore the cron scheduler is running for 45 mins or an hour longer than it says it will.
> also, when you use the advanced cron expression box, if you DO actually limit the activity to within one particular hour, the cron expression to human
> readable pukes when it displays