* subclasses HelpCommand to implement a custom help command.
add cog names for display in the help command.
Globalsettings is no longer a cog. HelpCommand uses the custom attribute
category for grouping commands.
* PEP8 fixes
* improve variable names for help command clarity. Fixes#70
* improve help command formatting
add aliases for weather commands
add help text for ae7q call and qrz
* move global_settings to common
* rename import alias
* fix loading/unloading of help command
* fix info command
* fix options import
* changed canonical command names to be more descriptive
* remove cog names and revert map/bandplan error listing
* add link to hamstudy references
still have to handle some errors (call not found, unable to login, etc)
and display the error. also probably don't need to open a new session
for every invocation. When this gets merged, remember to delete the old
command in lookupcog.
