Refactor modules, closes #223

* All modules are sandboxed now
* All images,sounds,fonts,translations and styles were moved to "data" folder
* Reorganize image files folders
* Remove unmaintained modules: client_particles, client_shaders
* Implement new automatic way to load styles and fonts
* Add hide/show offline option in VipList
* Add invite/exclude to/from private channel in players menus
* Many other minor changes

data/particles/shiny.otps

@@ -0,0 +1,52 @@
+Particle
+  name: shiny_star
+
+  min-position-radius: 0
+  max-position-radius: 8
+  min-position-angle: 0
+  max-position-angle: 360
+  velocity: 4
+  min-velocity-angle: 0
+  max-velocity-angle: 360
+
+  particle-size: 4 4
+  texture: shiny_star.png
+  composition-mode: addition
+
+Effect
+  name: Shiny3
+  description: 3 Shiny stars derping aroud
+
+  System
+    position: 0 0
+
+    Emitter
+      position: 0 0
+      delay: 0
+      duration: 0
+      burstRate: 0
+      burstCount: 3
+      particle-type: shiny_star
+
+    AttractionAffector
+      position: 0 0
+      acceleration: 2
+
+Effect
+  name: Shiny5
+  description: 5 Shiny stars derping aroud
+
+  System
+    position: 0 0
+
+    Emitter
+      position: 0 0
+      delay: 0
+      duration: 0
+      burstRate: 0
+      burstCount: 5
+      particle-type: shiny_star
+
+    AttractionAffector
+      position: 0 0
+      acceleration: 2