Plenty of new stuff

[edelkas]

This is mainly a stylistic commit, but there's also a couple of minor functionalities added.

Main change

Added padding to name formatting and score formatting, so that most functions are aligned in columns, with two modes:

• Fixed padding: If SCORE_PADDING is positive. The padding is determined by said constant.
• Variable padding: If SCORE_PADDING is not positive. The necessary padding will be calculated on each request using the longest name in the board. The maximum padding is determined by MAX_PADDING, and the default padding (in case anything fails) is determined by DEFAULT_PADDING. The behaviour if some long name reaches the max padding is determined by TRUNCATE_NAME. Adjust these parameters at will.

Smaller changes

Style

• Fixed markdown style for 'spread' function.
• Additional alignment and padding for other functions ('suggestions', 'cleanliness', etc).
• 4 digits in 'stats' function instead of 3 for proper alignment of columns.
• Deleted "th" from average rank rankings.

inne++ functions

• Prevent 'help' from spamming (on channels, only a presentation is shown, on DMs the full help is printed).
• Improved maxable function to exclude maxes the player already has.
• Added 'average rank for ' method.
• Added reminder of eotw when new lotd is posted, except when new eotw is posted.
• Added the cleanliness of the episode when asking for episode scores.
• Simplified command for "next lotd/eotw".

Dev

• Fixed 'missing' and 'worst' functions when there're no tabs provided (it used to return an empty list).
• Abstracted the number 20 into NUM_ENTRIES for rankings and other methods.
• Added a MAX_ENTRIES constant for lists in which the user inputs the number of results, to avoid spam.