Enhancement: Added Guess functionality and updated templates

[ansuuuuuuu]

main changes made here:

• index.html template now correctly displays the option to guess sketches if the user hasn't guessed them yet. (placeholders replaced)
• (already guessed values are ordered last)
• in guess view, users can now attempt to guess sketches. If they guess correctly, a randomised message with points is displayed
• get sketch into guess.html from sketch.sketch_path
• timer functionality removed from js and now in flask ***should implement on draw page as well?
• logic for correct guess
• timer instead of stopwatch

[HenriScaff]

Well done! Getting an error however, when I load /index.

"""

guessed_session = GuessSession.query.filter_by(user_id=current_user.id, sketch_id=sketch.id).first() NameError: name 'GuessSession' is not defined

"""

Will try fix.

[HenriScaff]

New error:

""" guessed_session = GuessSession.query.filter_by(user_id=current_user.id, sketch_id=sketch.id).first() AttributeError: 'AnonymousUserMixin' object has no attribute 'id' """

Will try fix.

[HenriScaff]

Fixed the above errors but finding other issues too.

• /guess does not seem to be retrieving images from the database (when I load /guess, get no image)
• don't see anywhere in the code where a database entry is actually made for GuessSession
• should rename the session variable 'start_time' to 'guess_start_time', because there is 'draw_start_time' too, might get confusing
• timing method may be problematic if load times are an issue (e.g., user finishes within 30s on their end, but takes a second or so for the msg to get to the backend, hence the backend believes they took longer than 30s -> I just made the limit 33s for /draw to counter this, might be worth considering doing the same)

Needs to be fixed and tested further before merging :) @ansuuuuuuu

[HenriScaff]

I adapted this PR @ansuuuuuuu in #41

Now merged and completed, well done.