This pull request regards a few changes to make the time table selector reliable upon the misleading information that sigarra can provide.
[x] Although it was indicated to the scrapper to get the subjects from the year 2022, it still scraps information from the year 2021. Thus it must be provided to the API the year of the courses and classes.
[x] Multiple practical classes are being retrieved by the scrapper. Thus a pre-cleaning process to remove these was added.
This pull request regards a few changes to make the time table selector reliable upon the misleading information that sigarra can provide.