Limit UI-width

[Death111]

Limit the width of the UI.
Currently, it shows all content. If we have a long todo - or adding a Note to a todo, the UI will be as wide as the text.

AC:

• Set max width to some appropriate value
• If text is longer than width, instead of a horizontal scrollbar I'd prefer a "..." in the labels. Tooltip shows whole content

[Death111]

Note field was limited to 400 width: https://github.com/Death111/KeepTask/blob/develop/src/main/java/de/doubleslash/keeptask/view/MainWindowController.java#L256
but todo itself has no limit yet. also check field project name, prio, .. and set a max width.

the width should also be moved (if possible) to the layout, not in the code