Add predictor page

[Blackmorse]

Current predictor framework is really ugly.

Ideas:

• show two columns of matches with ratings - for your team and opponents team
• each column should look like HT-dog analyzer
• have ability to select one match per column. They will be combined into "hypothetical match" with "predict" button
• show ratings in 3 formats (can be switched by a toolbox): pure hatstats, text, and ht-dog like
• add ability to EDIT rating at "hypothetical match" and predict it as well
• Predictor page - is an independent page, available from every place of the site
• there is ability to choose any teams you like. Even two similar teams. Or not choose at all: just "type in" any ratings.
• But also there must be a link from team's page: it leads to "predictor" page, with your team and nearest opponent teams automatically selected
• Also link from played match should exists - to simulate that match again or to edit ratings or to select other matches of that teams