Player cards without competition

Editors can now add a player card by
* Date range
* Current competition season

This will be very handy during the world cup, where season data is worthlessish.

# Say what?
![player cards](https://cloud.githubusercontent.com/assets/31692/2861920/e660d9da-d1e8-11e3-89a2-c98afd65618e.png)

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![Carded](http://gifrific.com/wp-content/uploads/2013/11/Soccer-Player-Flicks-Ball-Into-Players-Face-After-Yellow-Card.gif)