[Triplea-develop] Customizable Dice Sides Patch

[Gansito F. <gan...@gm...>]

Hi all,

This patch adds the option for a

<diceSides value="n"/> line in a game xml file.

If the property is not set, the value defaults to 6.

I removed Constants.MAX_DICE, since this no longer has any relevance,
and replaced all references to it with the number of dice sides.

In the battle panel, there can now be units that attack up to n (they
can attack at n).  If n>6, then the die shown is an image with the
number rolled printed inside.  It follows the same coloring scheme as
the normal dice.

It also fixes SF bug #1717832

I hope you like it!

Gansito