Merge pull request #56 from HabitRPG/sabe/tweak

Fix typos in ability descriptions
classes: temp hotfix for OP pickpocket, add values instead of multiply
fix drops: seed rarity & drop-chance separately. because we're using
predictableRandom, the rarity random is set NOT to be less than 75%, so
food is unlikely to drop without this fix
some passive stats balancing, not yet using @jfriendlys's algos, still
needs work
classes: spell balancing all around
add stealth back in. @danielthebard I do insist we keep this spell. It's been in many wikia & ingame descriptions, and highly-anticipated. I think rogues, a solitary class, can do sans one party spell
tmp fix, make sure *some* hp is lost
spelling
updated mage spells with @danielthebard's new content
Corrected placement on rouge_6 weapons

lowered them 2px so that they would be properly aligned.
Merge pull request #57 from crystalphoenix/develop

Corrected placement on rouge_6 weapons
fix https://github.com/HabitRPG/habitrpg/issues/2064 , make sure to
stack buffs
make stealth higher level & mp requirement
grunt spritesmith
passive-stats balancing round 2
comments with results on math_samples
add spells to math_samples
math_samples fixes for spells, consequent spell balancing
show tasks dodged # in math_samples, balance stealth
small exp tweak, grunt for spells