Clay And Pottery pack. Part 1.

Construction options:
1. Cut Down Grass
2. Remove Dirt Mound
3. Extract Clay Mound
Items:
1. Clay jug
2. Clay bowl
3. Clay container
4. Clay canister
5. Clay pot
6. Clay quern
7. Clay teapot
8. Clay lump
9. Brick
New materials:
1. Fresh Clay
2. Clay
New terrain object:
1. Clay mound
Remove unneeded space.
Change clay mound.
Remove flags from clay bowl.
Change clay vessels recipes.
Remove "remove dirt mound".

I didn't notice that you can already remove dirt mound using "tamp ground" option.
fix for bug when installing part to vehicle using crafting_inv cache, but cache is not updated
ocd fix
no longer bypassing cache in vehicle, invalidating cache after completing each possible vehicle action
Fix aim_speed when queried for best speed.
Add item info entries for sight dispersion and aim speed.
Removed potato as a battery component, too silly.
Make shrapnel from explosions hit origin square as well.
Decrease damage from frag rounds from 20-60 to 6-24 so they don't nuke armored targets.
Adds linoleum tiles to the list of non-offroading terrain.
Merge branch 'display-sight-dispersion' of https://github.com/kevingranade/Cataclysm-DDA into sights
Merge branch 'sights'
Merge pull request #10375 from kevingranade/silly-potato-batteries-are-for-citrus

Removed potato as a battery component, too silly.
Fixes confusing gun names re: new handgun.

Accidentally had this sharing the same RM designation as the 20x66mm
double barrel.
Merge pull request #10377 from KA101/skate

Adds linoleum tiles to the list of non-offroading terrain.