Revert #11993: new number format system does not and cannot work for CJK languages

There are too many intricacies that I am unaware of that are popping up after
asking whether things are right or not.
I do not want to keep playing whack-a-mole, so just revert the whole thing.

This reverts:
15be383b934dbf7c876b6d6ffaec7a406c82a39f
360fe8b0b639be9d39bc03a9d5d34123204c14fa
1aa9a5c0abaf9c5d6c49a3a76e2b1d7134c0bd10
59f56941e50bd4ebad31f9e771a4441f647692e5
7e2eefb91ff5999667752eea6e13bd8a0d293f48
b741b2ba6f790891961cb66a9320e75ca168cee4
609d0071d5e6b93aa61688714e9b92cf102e4683
9f8fd80112c188675179c9568a9be84da3df1713
a253205b932cc50fc9f25be390a6aaa370f89a45
819c6c756edd68599571eae126f305d6e3d247fc

Revert: Build signals to the next junction when dragging regardless of the Ctrl state (#12034)

This reverts commit b370ae1212abdc97034a6b4b8a2dffcffa1911f0.

Change: Replace long list of cargo filter buttons with a multi-select dropdown list.

As before, hold ctrl while clicking on an item to toggle selections.

Add: {CURRENCY_SHORT} only did k / m suffix. Add bn / tn and make translatable. (#11921)

64bit numbers are REALLY large, but our compact method was build
for 32bit numbers. Extend it to 64bit.

Fix #4415: Land info build date is also renovation date (#11759)

Co-authored-by: Gadg8eer <64449092+Gadg8eer@users.noreply.github.com>

Change: Don't mention TerraGenesis in setting helptexts

We no longer show the land generator in the World Generation GUI, so this is less important to explain in tooltips.

Codechange: List toolbar menu items and dividers explicitly.

This makes it clearer what items will be shown in the list, allows for non-consecutive
string IDs, and means unused enum values are not necessary.

Change: Move baseset missing/corrupted files label to list item. (#11455)

This allows any baseset error to be displayed in the drop down list so it is more easily visible, and avoids wasted space in the layout.

Add: Debug tool to draw widget outlines. (#11401)

This is considered a developer tool and is controlled from the help menu (or default hotkey Ctrl-O).

This draws a white dashed outline around widgets. NWidgetSpacer and (unused) WWT_EMPTY widgets are also filled with check pattern to highlight them, as they usually indicate a design issue.

Change: Use CARGO_LIST to show station cargo acceptance changes. (#11379)

This simplifies construction of the news message and allows for more than
two changes to be show in one line.

Change: Remove autosave from settings window (#11218)

It is broken since 4f4810d and it's also in game options.

Feature: Add config option to set default company secondary colour for new games

This does duplicate translation strings for the colours

Change: Clean up window title and button capitalization and wording (#11134)

* Change: Use consistent window title format for industry/cargo chains

* Change: Don't capitalize dropdown entry for cargo flow legend

* Change: Use consistent window titles for AI and GS settings

* Change: Use consistent window title for company value graph

* Change: Use consistent window title for industry funding

* Change: Use consistent button title to display industry chain

* Change: Use consistent button capitalization for local authority button on town window

* Fix: Don't capitalize random words in vehicle list management dropdown

* Fix: Use title case for Frame Rate window caption

* Fix: Use title case for Detailed Performance Rating window caption

Change: make Exclusive Transport Rights more exclusive (#11076)

Now, exclusive transport rights can only be bought if no company
currently owns them. A successful bribe will void any exclusive
transport rights that any *other* company currently has in the town.

Fix #4575: Use Latin 'l' in English translation of zloty. (#11090)

This avoids many truetype fonts being unusable due to this single character not being available.

Fix #11054: Prevent translation of currency codes.

Most languages stick with the 3-letter latin currency codes in the name
string, however some translations are... clever... and use the currency
symbol instead. Whilst this may look nice, it can cause issues with fonts
as some scripts have a specific limited set of fonts which do not include
these symbols.

Instead, hard code the currency code list and add it when drawing the
currency name.

Feature: allow to do a hostile takeover of an AI company (in singleplayer) (#10914)

With the removal of the share-system, you could no longer make an
AI disappear in a single player game. At least, not without going
into the console.

Add: [Linux] change default scroll mode to non-mouse-lock (#10920)

Wayland doesn't support mouse warping, X11 only for native
systems (so not for remote desktop, WSLg, etc), and emscripten
neither without complications. All these cannot offer a
mouse-lock.

Feature: opt-in survey when exiting a game

On first start-up, the game will ask if you want to participate
in our automated survey. You have to opt-in, and can easily opt-out
(via the Options) at any time.

When opt-in, whenever you exit a game, a JSON blob will be send
to the survey server hosted by OpenTTD. This JSON blob contains
information that gives a global picture of the game just played:
- What settings were used
- How many humans vs AIs
- How long the game has been played
- Basic information about the OS / CPU

All this information is kept very generic, so there is no
chance we send private information to our survey server.
Nothing in the JSON blob could identify you as a person; it
mostly tells about the game played. At any time you can see
what the JSON blob includes, by pressing the "Preview Survey
Results" button in-game.

Change: Standardise unit conversions and allow decimal places.

Previously the decimal_places member was mostly ignored except for
specific conversions. {DECIMAL} with 0 is the same as {COMMA} so there
is no downside to allowing any conversion to have decimals.