Improved Comfort Calculator

A number of new important features have been added to the comfort
calculator including:
1) An analysis period input
2) Header strings for output data when epw data is connected
3) Option to compute the Balance Temperature
4) Option to compute the temperatures defining the range of comfort
5) Esc key functionality
6) Option to input text values for different activities instead of met
values
7) An output data stream of 0's and 1's representing whether the
occupant is comfortable for that hour or not
8) An output for the total percentage of time that the user is
comfortable.
9) Various typos in the description as well as clearer text in the
description.

This commit also included some improvements to the descriptions of the
Construct Location and Humidity Ratio components