Luna 0.7.0-rc4

LUNA-62:

• redesigned game list (looks more like a panel now)
• this is also more or less the basis to allow switching between multiple view types (list, panel, ...) in the future

LUNA-63:

• should fix the SimplePairingManager (binary fallback if no crypto stuff is installed) (#117)

LUNA-64:

• redesigned the game information screen to be a bit more beautiful
• again, this is more of a refactoring to make future work easier