Thread:Extension talk:VisualEditor/Formula Editor missing

Thanks for the great pice of software! I'm very impressed by the features and stability of visual editor in the current state. But there are two things that i am not able to get to work: First, in my installation (both, media wiki and visual editor are from master branch), the link for the formula editor never shows up. going through the code of my VE repo, i can not even find some potion of code from it. Am I missing a submodule or even a extension? Second, the search of local images in the media explorer only gives results, when the exact filename is entered. I think it might be helpful, when it would rather look case-insensitive and defaults with a wildcard at the end of the phrase.