change food.key to food.text (displayed text only)

Change food.key to food.text in displayed text, to stop the "potatoe" typo being seen.
fix(?) for issue 2222 - untick removes too little XP,GP

This is a proposed fix for issue 2222 ("unticking a todo with a checklist removes much less XP and GP than it should") BUT I HAVE NOT TESTED THIS (I don't have a local install yet - sorry). Please see my comments at the end of that issue. Note that I don't know why "if direction is 'up'" was originally included - there might have been (and still be) a good reason for it.
Add some value to high Mana pools
Rebirth fixes: deequip pets and mounts, allow stacking at max level
Merge pull request #74 from HabitRPG/sabe/tweak

Add some value to high Mana pools
subtract MP when unticking a todo (instead of add)

Currently, when you untick a completed todo, you GAIN MP. Lines 837-839 of this change will cause you to loose it instead.

Line 841 will prevent your MP becoming negative if you used up all your MP before unticking the todo... BUT do we want to prevent negative MP under that circumstance? Perhaps it should be allowed to go negative? The circumstance I'm thinking of is:
1. You tick off a todo, causing your MP to reach (for example) 10.
2. You cast a spell that costs 10 MP. MP is now 0.
3. You realise that you had ticked off the todo accidentally (or deliberately to rort the system!) and so you untick the todo, which (without line 841) would cause your MP to go to -1. Strictly speaking, it SHOULD be -1 because you had spent MP that you hadn't truly earned, but negative MP might look weird and cause "bug" reports. Line 841 will prevent it being negative.
Merge pull request #72 from Alys/patch-1

change food.key to food.text (displayed text only)
Merge pull request #73 from Alys/patch-2

fix(?) for issue 2222 - untick removes too little XP,GP
Merge pull request #76 from Alys/patch-3

subtract MP when unticking a todo (instead of add)
grunt
Fix assignment operator bug
Merge pull request #75 from HabitRPG/sabe/tweak2

Rebirth fixes: deequip pets and mounts, allow stacking at max level
Add strings from views/shared/tasks and views/shared/profiles folders
Merge branch 'develop' of https://github.com/Sinza-/habitrpg-shared into develop