Merge pull request #55 from jaredsampson/master

Fix for `re` import error in spectrumbar.py
Delete cheshift.py

cheshift plugin is now hosted on its own repository at https://github.com/aloctavodia/cheshift The new CheShift performs all computations locally, hence now I must distribute the python code with some data files. The installation is easy for the user if cheshift has its own repository
Create quickdisplays.py

A collection of standard representations for quick formatting, pymol wiki page pending.
Create format_bonds.py

Allows to easily format double bonds in several amino acids, e.g. from double to delocalized
Pymol wiki page pending...
Create movie_color_fade.py

movie_color_fade is like movie_fade, but fades the color of an object
Pymol wiki page pending...
Create get_colors.py

Includes two functions:
    get_colors: returns a list of defined pymol colors
    get_random_color: returns a random color
# I'm not certain, but there may be a more elegant way of doing this
Update get_colors.py
Update quickdisplays.py
Update quickdisplays.py
Update quickdisplays.py
Update quickdisplays.py
Update format_bonds.py
Update movie_color_fade.py
Update quickdisplays.py
Update get_colors.py
Merge pull request #56 from andwar/master

Added four new scripts