Fix Parser for different faculties

[rubuy-74]

Closes #800
In Sigarra's exams page for FCUP and other faculties, some exams have their begin and end times in a different format, not previously supported by the Exams Parser.

Review checklist

• Terms and conditions reflect the current change
• Contains enough appropriate tests
• If aimed at production, writes a new summary in whatsnew/whatsnew-pt-PT
• Properly adds an entry in changelog.md with the change
• If PR includes UI updates/additions, its description has screenshots
• Behavior is as expected
• Clean, well-structured code

[codecov]

Codecov Report

Merging #1096 (d119a8b) into develop (66fcc86) will decrease coverage by 0%.
Report is 91 commits behind head on develop.
The diff coverage is 100%.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop   #1096    +/-   ##
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- Coverage       17%     16%    -0%     
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  Files          212     220     +8     
  Lines         6472    6672   +200     
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+ Hits          1044    1056    +12     
- Misses        5428    5616   +188