Adding Beanie Copter Cap.

Graphic started by Millarca, finished by veryape.
XML done by veryape.
Running formatXML.sh
Add missing + in effect description of Beanie Copter Cap.
Less saturated version of the Beanie Copter Icon done by veryape.
Some changes on the graphics done by Alige.

Remove 'cap' from the name.
More adjustments on the Beanie Copter by Alige.

- fixed the propeller's contrast
- improved colors a bit
- fixed incorrect pixels on the direction="right" frames
Fixed 019-1 over- and fringe-layer issues in 019-1

and made all layers visible
Add grass tile to the Over layer at 125, 104.

The nearby tree needs to be moved into the over layer too because of this.
Problem reported by veryape.
Fixed overlapping between

* 007-1
* 010-1
* 016-1
Merge remote-tracking branch 'Jenalya/beaniecopter'

Beanie Copter graphic created by Millarca, veryape and Alige.
Beanie Copter xml created by veryape and Alige.
Add Npc 375 for annual easter events. (3 Eggs on the Ground)
Add recolored eggshell heads.
Optimized eggshell hats:

 * Delete png/xml files of recolored eggshells.
 * Made original eggshell hat dyeable (reduce number of shades + desaturate)
 * Add dye string for current eggshell hat (give back its slight blue tint)
 * Add dye strings for the 6 easter 2013 eggshell hats
 * Fix incorrect IDs of orange/dark eggshell hats
Merge branch 'easter'

Conflicts:
	items.xml
055-1: Fixed Fringe layer, added Ground2.
056-1: Fixed Fringe layer, renamed Road to Ground2, fixed some incomplete treetrunks
Collision fixes for 055-1 and 056-1.
008-1: Fixed Fringe Layer, added Ground2.
Adapt the item description of the colored Easter eggs.

Since the event where you got a prize for collecting all of them isn't active anymore,
the description was misleading.
Add a particle effect that can be used when the player receives some object.