Misc 1.7beta5

Meaningful patch notes in approximate order of relevance:

• Tweak difficulty settings for nightmare (rare spawn rate increased from 6.77%->12.5%, zone level multiplier decreased from 50%->25%)
• Buff the celestial/radiance tree
• Give all melee classes that don't currently start with a point in weapon mastery at birth a point in weapon mastery at birth; this also serves to make sure randbosses have the weapon mastery they need
• Improve Pace Yourself
• Slightly increase dammod for knives (45% str/45% dex -> 50% str/50% dex)
• Slightly buff glyphs by making them no longer prioritize yourself before enemies for placement
• Buff Dawn's Blade
• Make Vor Pride's special vault have a slightly friendlier layout
• Remove digging from all vaults that currently require digging
• Add a fun mechanic to prevent farming of ruined dungeon orbs to get alchemy ingredients

Mostly irrelevant other changes:

• Make orc summoners and orc grand summoners use psiblades instead of slings, give skeleton assassins resolvers.sustains_at_birth, reduce how many turns mind parasite puts talents on cooldown for, remove object cost multiplier from slazish fens, make stoning poison no_npc_use

game/modules/tome/data/birth/descriptors.lua

@@ -197,7 +197,7 @@ newBirthDescriptor{
 	{
 		_t"#GOLD##{bold}#Nightmare mode#WHITE##{normal}#",
 		_t"Unfair game setting",
-		_t"All zone levels increased by 30% by the time Player reaches level 10",
+		_t"All zone levels increased by 25% by the time Player reaches level 10",
 		_t"All creature talent levels increased by 30%",
 		_t"Unique (fixed) bosses advance in bonus classes 30% faster",		
 		_t"Rare creatures are slightly more frequent",
@@ -216,7 +216,7 @@ newBirthDescriptor{
 	game_state = {
 		default_random_rare_chance = 8,
 		
-		difficulty_level_mult = 1.3,  -- Level multiplier for Zone.level_range, handled in Game.applyDifficulty
+		difficulty_level_mult = 1.25,  -- Level multiplier for Zone.level_range, handled in Game.applyDifficulty
 		difficulty_level_add = 0,  -- Flat value added to Zone.level_range, handled in Game.applyDifficulty 
 
 		difficulty_talent_mult = 1.3,  -- Talent level multiplier for non-summoned NPC talents and base (non-autoclass) fixedboss talents, handled in NPC.addedToLevel