The chemical and mathematical formula inspectors and dialogs
have a lot of similar functionality, and the common parts are
now moved to the common MWLatex class.
MWMath* classes now inherit from MWLatex*, and so do
the new MWChem* classes.
Bug: T153365
Change-Id: I4452ceca55197fda5f1e1293a5741c6f5fb7c245
The context item for math nodes now has two edit buttons,
one for the inspector (edit inline) and one for the dialog
(edit). Creating a new math node automatically opens the
dialog.
Bug: T120382
Change-Id: Icd3ec75262fcc5e0cbc304051c651278b0d8b01c
