Add Player info display.

The Player class now has an info_display() function that shows the player's current status. This can currently be seen on the turn menu by pressing i.
Merge branch 'master' into player_info_display

Conflicts:
	game.py
Added knowledge and completed courses to player info display.

Knowledge is just printed as a number, but the completed courses are printed as a list, and the list is indented for aesthetics.

This closes #50
Expanded info_display() to show job pay.

This commit moves around the string creation so that if the player doesn't have a job, there is no error generated when trying to get the pay. This will make it easier to make changes to this string in the future.
Merge pull request #54 from ChodeGames/player_info_display

Player info display