Resource Conflicts are not detected in certain cases

To get started, I found this error when I had my site set up according to the way I mentioned in #19 on this page: http://drupal.org/node/1637570 . Also, you can try this directly on my development site: http://www.spacesmovement.com . Please be nice and reserve the "Error checking" item only, as people are actually using the other ones! I created an example case arleady: view the WEEK of Feb. 10-16, 2013 at http://www.spacesmovement.com/reservation-calendar/63 to see an example of the bug.

So here's what I found, let's say that I create a reservation from 8-10 AM. Then I create a reservation from 7-11 AM. In other words, the new reservation dates are outside of the old reservation dates on both sides. The site simply creates the new reservation and does not throw an error. However, if either the start date, end date, or both either match or are inside of the old reservation, a conflict is detected and the site throws the appropriate error.

I am not enough of a coder to fix the problem, but my guess is that we need to add in something that not only checks for cases of the new dates being inside of the old dates, but also of old dates being inside the new dates. I think the term for this search is whether the old date "is between" either of the new dates.