Model Redesign: Added Reference Frames

Added Inverse Functions
UI Redesign
Cleaned Code

MathPad/MPSumFunctionLayout.m

@@ -142,12 +142,6 @@
 
 - (void)draw
 {
-#ifdef MPDEBUG_DRAW_BASELINE
-    [[NSColor redColor] set];
-    NSRectFill(NSMakeRect(0, -1, self.bounds.size.width, 1));
-    [[NSColor textColor] set];
-#endif
-    
     // Get the current context
     CGContextRef context = (CGContextRef)[[NSGraphicsContext currentContext] graphicsPort];
         
@@ -161,12 +155,6 @@
     CGContextSetTextPosition(context, localLineBounds.origin.x, 0);
     CTLineDraw(line, context);
     
-#ifdef MPDEBUG_DRAW_FUNCTION_BOUNDS
-    [[NSColor blueColor] set];
-    [[NSBezierPath bezierPathWithRect:localLineBounds] stroke];
-    [[NSColor textColor] set];
-#endif
-    
     // Draw the start function
     MPLayout *startExpressionLayout = [self childLayoutAtIndex:0];
     NSPoint startExpressionLocation = [self offsetOfChildLayoutAtIndex:0];