seasonal harvesting from trees and shrubs
unified the tree & shrub harvest functions
typo fix
Move the addition of the FIT tag out of the item constructor.

It is now applied there:
- npc starting inventory and worn items (1/3 chance)
- result of crafting (always), including byproducts
- spawning items on the map (e.g. mapgen) (1/3 chance)
- spawning items through item groups (1/3 chance)

Adding the tag does not happen in finalize_crafted_item, but in recipe::create_result instead. That way the item used to display the stats of the result also has the FIT tag.
Prevent multiple item ids in standard_itype_ids.

Would have happened when a mod overrides the item definition.
Because standard_itype_ids is a vector, multiple entries with the same value are possible.
Content of items destroyed by acid get dropped separately.

Otherwise adding those items to the i_at vector invalidates the iterator.
this should fix the bug for loading the map a year later in the same
season, and the plant not being harvestable, but its not...
the submaps last_touched attribute is now when accessed.
this commit's point is to ask in github...
fixes the bugs spotted.
makes use of bitflags for performance optimization
MShock's v0.31

ref_lighter_on
socks_bowling
diamond_katana
diamond_knife
diamond_machete
newspapers
pine_bough
scarf_long
scarf_fur_long
pipe_tobacco
vp_frame_wood_horizontal_2
vp_frame_wood_vertical_2
t_door_b_peep
t_door_boarded_damaged
t_door_boarded_damaged_peep
t_door_boarded_peep
t_door_c_peep
t_door_locked_peep
t_door_o_peep
t_pit_glass_covered
f_large_canvas_door
f_large_canvas_wall
f_large_groundsheet
f_rubble_rock as f_rubble for now
assigned all brew_, beet_syrup
tweaked t_sandbox
tweaked t_wall_tcon
tweaked background for met. wall
fixed apricot tree
For mods:
t_little_column
t_gas_pump_a
gasdiscount_
hand_paddles
hand_pump
Merge branch 'seasonal-fruit-trees' of https://github.com/jcd000/Cataclysm-DDA into merge
Merge branch 'tileset' of https://github.com/Mshock777/Cataclysm-DDA into merge
Merge branch 'bugfixes' of https://github.com/BevapDin/Cataclysm-DDA into merge
Fixed a comment.
Merge branch 'quick-worldfactory-comment' of https://github.com/mafagafogigante/Cataclysm-DDA into merge
JSON patch-job

No big deal, I've made copy-paste errors too.