Making TBA/TBD more esthetically pleasing

[RemyMess]

Problem:

1. TBA/TBD in title looks unprofessional and unpleasant to read when a lot of talks have it
2. TBA/TBD talks are most of the talks in the DB

Observation: most of the TBA/TBD talks have the name of a speaker. Solution: replace TBA/TBD by f"Seminar from {speaker_name}" or else for example.

Candidates: (get at least 10)

• Seminar with {speaker_name}
• Talk by {speaker_name}
• {speaker_name} on {subtopic) (if subtopic is not a primitive node)
• '{agora_name}' talk with {speaker_name}
• Latest advancements with {speaker_name}
• Recent advancements with {speaker_name}
• Topics on {subtopic} with {speaker_name}
• Advancements in {subtopic}
• Seminar on {subtopic}
• Talk on {subtopic}

Fetch the subtopic of a previous talk to get subtopic info

[RemyMess]

Add this augjmentation in "createTalk" if value is TBD/TBA; this title will be added in DB