Add Magic tool doc translations; install them

Adding snapshot of (basically untranslated) Magic tool docs
in the other locales currently supported by 'tuxpaint-docs'.

Update Makefile to install them.

magic/magic-docs/ja_JP.UTF-8/index.txt

@@ -0,0 +1,100 @@
+                  Tux Paint "Magic" Tool: List of Magic Tools
+
+Distorts
+
+     * Blocks
+     * Blur
+     * Chalk
+     * Clone
+     * Distortion
+     * Drip
+     * Edges
+     * Emboss
+     * Fisheye
+     * Glass Tile
+     * Halftone
+     * Mosaic
+     * Hexagon Mosaic
+     * Irregular Mosaic
+     * Square Mosaic
+     * Noise
+     * Puzzle
+     * Ripples
+     * Sharpen
+     * Silhouette
+     * Smudge
+     * TV
+
+Color Filters
+
+     * Cartoon
+     * Color Shift
+     * Color and White
+     * Darken
+     * Lighten
+     * Negative
+     * Opposite
+     * Tint
+     * Xor Colors
+
+Picture Warps
+
+     * Flip
+     * Fold
+     * Mirror
+     * Panels
+     * Perspective
+     * Shift
+     * Waves
+     * Wavelets
+     * Zoom
+
+Painting
+
+     * Bricks
+     * Calligraphy
+     * Confetti
+     * Foam
+     * Fretwork
+     * Grass
+     * Light
+     * Metal Paint
+     * Pixels
+     * Rails
+     * Rain
+     * Rainbow
+     * Smooth Rainbow
+     * Toothpaste
+     * Wet Paint
+
+Pattern Painting
+
+     * Kaleidoscope
+     * Pattern
+     * Picasso
+     * Rosette
+     * Symmetry Left/Right
+     * Symmetry Up/Down
+     * Tiles
+
+Picture Decorations
+
+     * Blinds
+     * Checkerboard
+     * Snow Ball
+     * Snow Flake
+
+Artistic
+
+     * Flower
+     * Lightning
+     * Real Rainbow
+     * ROYGBIV Rainbow
+     * String V
+     * String Corner
+     * String Edges
+     * Tornado
+
+     ----------------------------------------------------------------------
+
+                                Tux Paint 0.9.27