Fixed campaigns not using the correct map settings
Editor
`Convert To Scenario` menu item added to `File` menu that allows converting an already opened map to a scenario.
Multiplayer
Added the foundation for multiplayer queueing
Lua API
Add `mvt_alias` and `def_alias` to `wesnoth.terrain_types`.
Packaging
Boost 1.70 or later is now required
Translations
Updated translations: Bengali, British English, Finnish, Italian
User interface
It is now possible to search help topics by name/id in the Help Browser.
WML Engine
`dismissable` and `block_dismiss_message` keys added that allow marking an unit as dismissable, and what message to show if user clicks `Dismiss` button in Unit Recall dialog.
Added as a conditional tag. It takes the same arguments as . It returns true if a side matching the SSF exists, false otherwise. Added to the schema.
Miscellaneous and Bug Fixes
GUI.pyw: use the Windows API through the `ctypes` library to detect the user's language on Windows (#9972).
Fixed persistent WML being stored in the wrong folder