Added Khorne Lord of Skulls to Chaos Space Marines

Closes #70
Added Khorne lord of skulls to Chaos Deamons

Addresses #71
Adjusted Soul Grinder marks of chaos

Closes #75
Adjusted default weapons for Valkyrie transport

Closes #79
Added Scorpion exarch  deafault weapon

Addresses #81
Re-work of artefacts

Addresses #51
Adjusted points of Lard raider reedemer for dark angels

Addresses #80
Merge remote-tracking branch 'upstream/master'

Conflicts:
	Dark Angels - Codex.cat
Merge pull request #82 from hisop/master

Compilation of changes described bellow.