Show cards in the results / fixtures page

[ceddlyburge]

It would be good to show the penalty cards that people recieved during games in the results / fixtures page, in much the same was as #27.

Cards should be entered in to the spreadsheet in "Player name: description" format. For example "Cedd Burge: Yellow". Multiple cards should be separated by commas.

[ceddlyburge]

It would be best to associate an icon or a gif or a colour with each type of card description. This should be specified in the environment variables for the app. If there is not variable, a suitable default should be used.

For example, if there was a "Cedd Burge: Yellow" card in the spreadsheet, this would match a "Yellow" environment variable.

Ideally it would be able to recognise this as a colour, and provide a default icon with "Yellow" as the colour if there is no environment variable, but a default icon with no particular colour would also work.