Clarifies text node's ability to parse HTML with Qt.
Removes janky incomplete "rich text editing" functionality. I don't think this is the right approach.
* .arg() doesn't handle plurals, replace %1 with %n and pass number to tr(), but only if there is an accompanying word for that we want singular/plural translations and only for whole numbers.
* Qt's translation methods only accept integers and we don't know what grammatical number form would be correct for floating-point numbers in different languages anyway.
* Add optional 2nd argument to SliderBase::SetFormat() to activate deferred plural handling:
SetFormat(QT_TRANSLATE_N_NOOP("olive::SliderBase", "%n unit(s)"), true)
* Generate en_US.ts with lupdate's -pluralonly option. Only source strings that require plural handling need to be translated (as long as the source language is American English).
Cleaned up and improved the audio tab.
Fixes#1546. Kind of. There doesn't seem to be much need for a
sample rate selection for our current high-level audio system.
If we implement higher end audio backends in the future (e.g.
ASIO, JACK), those can be given a sample rate setting.
Reduces code by reusing the existing node infrastructure. Also
helps prevent race conditions since the node/render system is
designed for multithreading.
Project items are now represented directly in nodes opening up more versatility and possibilities. This is the first iteration of this and will be buggy. Need to test thoroughly.
This makes the node system somewhat more high-level with the intent of making
working with them far more flexible and stable. By making the architecture more
abstracted, it becomes far less rigid which should allow us to do even more
with it and make it much less crash prone.