Added "flags" : ["MODE_BURST"]" to battle rifle conversion mod as one potential solution to issue #6135
Merge remote-tracking branch 'frycarson/BRifleModJSONFix'
Added "flags" : ["MODE_BURST"] to auto-fire mechanism gunmod.
Update mods.json
introduction of armor_layers.h
slow leaks from fuel tanks
corrected for vehicle position and orientation, ensured correct amounts are dropped
reserve space for flags description, refresh warmth&enc. block properly
astyled code (not sure about spacing in brackets though). added explicit fixes for #7117
Add grammatical number support for many strings

So that grammatically awkward strings like “Upgrading bartering costs 1 points.” should be a thing of the past.

Note to developers: This has been done by calling
ngettext(singular_string_in_english, plural_string_in_english, number_to_determine_which_string_to_use)
instead of
_(some_string)
for the relevant strings. This commit touches a surprisingly large number of files.

This commit addresses all strings mentioned in GitHub issue #4649 (and some more) except item names.
Item names will (hopefully) be treated in a future commit.
Clean up IFF warning beep code
better definition of required lines for right pane
Fixes odd toilet placed
Fixes scabbard recipe.

Superglue is used as a component, not a tool.
Makes throw_immune actually useful

Believe it or not, is_throw_immune wasn't actually checked anywhere in
the code.  Time to fix that!
Merge pull request #7154 from Rivet-the-Zombie/recipe-fix

Fixes scabbard recipe.
Anti-Vortex

Currently it's the only "throw" attack against the player, so Judo
immunity applied.   Fixes potential bug in the dodge/tentacle code too.
Merge fuel leaks, pluralization support, and misplaced toilet fixes.
Merge armor layering menu cleanup.

Conflicts:
	src/item.cpp
Merge pull request #6977 from Wishbringer/GunmodFix

Gunmod bugfix