After this change there is not need to pass sendModal instance from AppMain to other parts of app.
Then SendModal should be launched simply by calling Global.openSendModal(....)
- legacy Style and ThemePalette removed
- moved and deduplicated font definitions into `Theme` (unrelated to a
color palette)
- `Style.current.foo` -> `Theme.foo`
- `Style.current.fooColor` -> `Theme.palette.fooColor`
- upgrade the imports to 5.15
- removed some mode dead components
Fixes#16514
Khushboo Mehta
Sale Djenic
Lukáš Tinkl
Michał Cieślak
Seitseman
Anthony Laibe