Fixed crash when Thaumcraft is not installed.

- removed imports of Thaumcraft related classed from everywhere except
the proxy.
- used simple object returns to prevent calling TC classes from outside
the proxy.
Derp.

- readded the 9 aspect limit.
Added cheat option to power junction for Debug mode

- easy GUI button to add power, makes it easier to debug.  I could
revert if this isnt necessary, but it helps me so...