This patch improves consistency in map descriptions and other user-facing text strings by making the following changes (per the [[ https://trac.wildfiregames.com/wiki/EnglishStyleGuide | style guide ]]):
* ` ` → ` ` (one space instead of two)
* `\u000a` → `\n` (for consistency; identical)
* `\"` → `“` or `”` (proper quotation marks)
* fix a few typos
* don't capitalize cardinal directions (north, east, south, west), unless part of a name (e.g. Northern Europe, Far East, South Africa, Western Mediterranean)
* don't capitalize resources (food, wood, stone, metal)
[EDIT] Further changes:
* Capitalize Female Citizen, Citizen Soldier, House, Farmstead, Storehouse, Field, and Hoplite in the user-facing texts in the tutorials.
* Three skirmish map descriptions mentioned Iberians didn't have starting walls. Those sentences are deleted, for consistency, since starting walls are actually absent on about half of all skirmish maps.
* Fix some spacing the ESLintBear complained about.
Due to a `checkrefs.pl` complaint, changes to scenarios and skirmishes are split off (see D3651) and this patch now only changes texts in the tutorial and random maps.