The new GraphPanel class, now removed into its own library.
Merge origin/master

Conflicts:
	build/built-jar.properties
	nbproject/private/private.xml
	src/graphit/Const.java
	src/graphit/Cos.java
	src/graphit/Cot.java
	src/graphit/Csc.java
	src/graphit/Cubic.java
	src/graphit/GraphItGUI.form
	src/graphit/GraphItGUI.java
	src/graphit/Linear.java
	src/graphit/LnX.java
	src/graphit/PowerOfE.java
	src/graphit/PowerOfX.java
	src/graphit/Quadratic.java
	src/graphit/Quartic.java
	src/graphit/Sec.java
	src/graphit/Sin.java
	src/graphit/Tan.java
	src/graphit/X2.java
	src/graphit/X3.java