Remove Metadata class and substitute for dict.

Considering we only ever need one instance of the metadata information,
it is silly to require the full overhead of a class. Additionally,
classes can make it difficult to append attributes across function calls
which could be necessary in the future.

A dict was chosen instead as it is lightweight, has named attributes for
readability (like a class), and is more easily mutatable.
Move permenant schedule loading to CSched class.

This way, a copy can easily be made for each week of the semester.
Strip and lowercase sched file input.
Add ability to make copies from sub files.
Add hours summation method over CSched.
Print summed hours in a nice format.

In opposition to trousers, the number of shifts taken is currently
missing.
Add ability to replace logins with monikers.

This occurs when running the script as "pants".
Correct formatting in pants.json.dist.