Reloaded the druidism branch

Some weird detached head problem happened and I lost the whole branch
Updated Readme

Turns out there are no scottish, welsh and breton pagans
Added GFX

Wolf trait, Gwydion coa, religious icon
Nicknames

The Wolf and The Boar
Added Holy Order

The Sons of Gwydion
Updated various files
Finalised the Holy Order
Changed Event Pictures
Tweaked Celtic Religion

Added unique modifiers, names and color to the celtic religion
Changed one more event picture
Updated localisations
Changed some localisations
Last Tweaks before release
Updated Readme
Merge pull request #1 from Superpat/druidism

Druidism