3.0-b8

• issue #26: Updated algorithm to calculate distance from represented area using buffered AOI boundary. The distance layer is then clipped to the actual AOI boundary to select a site. This should catch represented areas that are outside the AOI boundary.
• issue #37: Removed some code that arranged the layers into a guaranteed order to improve performance; Updated pseudo site map to re-use existing layers if they were already on the map to improve performance
• issue #46: Fix bug with the upper precipitation range being displayed wrong. It will still be wrong if the auto-site was created under a previous version
• issue #47: Rename scenario 1 layer to 'Scenario 1 Represented Area' for both Site Scenario and Pseudo-Site maps
• issue #48: Implement 'all constraints' layer on auto-site map if multiple constraints are used