Add visual reference, such as gifs, for anything that isn't easy to explain

[Crystalwarrior]

For documentation we need to create gif's that explain the process of how to do anything complicated to explain. Where to click, what to type in, to get the result - really to-the-point and simple, with text process.

[AnidemDex]

• [x] More information about how to use the timeline editor
• [ ] More information about how to use the character editor

Both pages can be in the tutorials group of the documentation.