Item Material Fixes

Went through DLC items looking to change scaling, found several material & progression errors:

--Some robes in Awakening used material numbers that don't exist (I'd guess those materials were cut content, since they follow the numerical patterns of the new Awakening materials we did get), causing them to use their bland untinted colorings.

--Some items had mismatches between material and material progression, which can cause the item to change color/material in unexpected ways when being sold/rebought, stored, summoned via console, etc.

Some of these are fixed in other mods (like in the great DLC Item Fixes), but I've compiled all the ones I found here for convenience.

In most cases of mismatch, I changed the progression to match the default material, but with the items in Stone Prisoner, I've done the opposite for two reasons:

a) all have fantastic bonuses, which would be more expected at higher tiers, and

b) the couple items from Stone Prisoner with proper material/material progression were at tier 5 or 6, not 2.

A couple of these items were also missing the inventory subgroup, which causes the item to appear at the bottom of the inventory; I've fixed that.

Does not include Bregan's Bow or the Bulwark of the True King, because despite also having material/progression mismatches, they're flagged as "unique", and therefore are excluded from the game's scaling scripts and don't have any weird issues.

Will conflict with other mods that edit these UTIs (Duplicate Search Tool and Conflict Scanner are great for finding problems).

Edited items:

Lorekeeper's Cowl

First Enchanter's Cowl (Awakening version)

Lorekeeper's Robe

Blood Promise

Vestments of Urthemiel

Spellminder

Robes of the Architect

Darkspawn Staff (Awakening version)

Vestments of the Seer (all three versions - Origins, Awakening, Witch Hunt)

Helm of Honnleath

Wilhelm's Magus Staff

Dead Thaig Shanker

Cadash Stompers

Sorrows of Arlathan (Witch Hunt version)