seed settings and pack amounts are stored in settings

- Added SetWindow::setControlStatusText function for setting the status text of child controls, since wx lacks a feature for doing it automatically.
- RandomPackPanel's spin controls are cleaned up when the set is reloaded
- to_int script function now converts empty string: to_int("") == 0

Mana costs like 123/C are now parsed as {12}{3/C} instead of {123/C}. The reasoning is that a cost of {10/C} or more is very unbalanced, so you want that.

this fixes combined_editor in extra fields.

Catch all exceptions in onPaint functions, because otherwise we show a message box. Message boxes while in a paint handler lead to a crash on win32.
Made a CATCH_ALL_ERRORS macro containing the common catch statements.

changed function name (exportCard -> includeCard), because it better describes what the function does.

Added German translation.  Also only up to date as of 0.3.6b.

Added remove_duplicates flag to sort_list function;
Fixed documentation of <size:> tag

Fixed: Incorrect comparison operator for AColor caused Scriptable<AColor>s to not be updated when only the alpha changed.

Added abs, random_int, random_real, random_shuffle, random_select script functions.
Made == comparison of doubles use a small epsilon, so things like 3/2 == 1.5 are actually true.

New saturated multicolor and dark artifacts for magic-new-flip, magic-new-split, magic-new-promo, and magic-extended-art styles.

When saving files an older version number is used if that version of MSE would be able to open the set

Added I_DUP instruction