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
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
Fixed Fringe layer, added Ground2.