Separate Constants class

[Matthias Schoettle]

The ca.mcgill.ram.util.Constants class has grown significantly over time and now contains several different concepts, such as fonts, colours, font sizes and various constants.

I propose to separate this class into several utility classes:

• Fonts for fonts,
• Colors for colours,
• Keep the various constants in Constants.

Also, the constant FONT_NAME is public, but is only used within the class, it should be private.

[Matthias Schoettle]

References issue #55: Moved all font stuff into separate Fonts utility class.

→ <<cset 85deea24d3d0>>

[Matthias Schoettle]

Resolved issue #55: Moved all colors to Colors utility class.

→ <<cset 818159f3377f>>