fix(checklists): Bring MP behavior in sync with XP/Gold

Previously, the player would accrue Mana for every checklist item when a To-Do was completed, regardless of whether or not those checklist items were complete. This was inconsistent with XP and Gold, which were only multiplied based on the number of checklist items previously clicked. Now Mana acts the same way, multiplying MP scored by (1 + completed checklist items).
Changed string costumeText to reflect changes to inventory panel. Issue #2158
fix(drops): don't random-drop cakes, fixes #2700
fix(quests): drop vice1 when lvl 30+, fixes https://github.com/HabitRPG/habitrpg/issues/2694
Merge pull request #125 from brandonjreid/develop

Changed some skills to use a hyperbolic formula
Merge pull request #124 from marcgenesis/develop

Changed string costumeText to reflect changes to inventory panel. Issue ...
Merge pull request #123 from HabitRPG/sabe/fix

fix(checklists): Bring MP behavior in sync with XP/Gold
chore(simulations): fix simulations
chore(grunt): grunt
Replace hard-coded strings for window.env.t on js files
Fixed stealth display, added mock dailies (for stealth calculations), forced buffs to reset after each test; also changed stats to be more reflective of potential max stats.
Stealth scales with # of dailies as well as per; currently avoids 100% of dailies at 100 total per.
Merge pull request #129 from Sinza-/develop

Replace hard-coded strings for window.env.t on js files
i18n(): remove app.json
Add files for translation
Create challenge.json
Create character.json
Create contrib
Create contrib.json
Delete contrib