Major updates with Techplanning Module

Including restructuring of planning algorithm to incorporate multiple
planning objectives, a revised GUI for stormwater harvesting, water
demand calculation, water efficiency, minimum system size restrictions,
stormwater harvesting strategy customization, separate service levels
for different objectives and a revised multi-criteria evaluation
algorithm.

New python scripts added include 'designbyeq' and 'designbysim', which
include design algorithms that either use equations or time-series to
calculate a system design. UBseries.py reads time-series data and
processes these in various ways for the major modules to use.

Minor changes made to delinblocks.

Urbplanbb's water demand aspects have been removed from the module and
the GUI. These are not in techplacement.

Export function updated with new Attributes and dialogimg_rc.py with new
GUI images that have been recently added.