Add villager in cottage landmark

Add a villager in the cottage, if not abandoned/ruined
Add forge and graveyard

Add forge and graveyard landmarks
Correct buried chest coordinates for cottage
Fix forge render, corrections to graveyard

Forge render completed
Graveyard add flowers, correct signs
Improvements to graves

Add flowers in pots (so they can sit on gravel or sand), and correct the
grave inscription orientation.
Cosmetic changes to Forge and Graveyard
Expand default structure list.

Issue#244
Fixes tall flowers.

Closes #246
Added docs link, corrected some spelling.
Landmarks should avoid Still Water too.

Issue #245
Set all flower upper IDs to 8
Merge branch 'development' of https://github.com/orphu/mcdungeon into development
CHANGELOG update.
Version bump to 0.14.1
Add sample config for Lucky Blocks

Adds a sample configuration file set to make MCDungeon use Lucky Blocks
(from the mod) as loot items
Merge remote-tracking branch 'upstream/development' into development