Add score display amount changing option

[def750]

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As I said in the title, I would like to have option to change scores displayed by page. For example: In user page there is Recent scores and Top Plays div, there should be easy option to increase amount of scores loaded. Also to not overload the page there should be button like Show more to load more scores.

Describe the solution you'd like
Good option would be adding new page in admin panel Something like Admin > Settings Where you can set basic options of the site for now, if needed it could be expanded in the future. Or if it's too much right now just to add these values to config file.