Major updates to post processing, Minor bug fixes

[nikhar-abbas]

1. Some small updates have been made in the tuning processes for distributed aerodynamic control.
2. Bug fixes for the Bladed-style control interface
3. Setup.py cleanup to ease with conda
4. Large updates to Utilities.py:
   • load_output is renamed to load_fast_out
   • load_fast_out now writes out a list of dictionaries containing openfast data, where each list item corresponds to an OpenFAST output case.
   • All plotting functions were moved to a class FAST_plots
   • plot_fast_out only receives the output from load_fast_out for the OpenFAST data to plot
   • plot_spectral is included for a number of frequency-domain based plotting capabilities
   • trim_fast_out is modified to only modify data passed in the new dictionary-based structure
   • some verbosity flags have been included