Fixes for pasting images, especially under windows where the image mime type detection doesn't work as expected

- Fixes scrolling to an event not being reliable
- Adds new /goto command that can open URLs, go to events, or go to message indexes.
- Refactored ChatPage::handleMatrixUri() to contain the handling originally in Nheko::openLink(), and makes it return a boolean based on whether the URL was handled internally or not.

see: https://github.com/vector-im/element-ios/issues/2353

Loren Burkholder authored 4 years ago and Nicolas Werner committed 4 years ago

There was nowhere that an actual pointer was passed, and I wanted to do references for something else.

Loren Burkholder authored 4 years ago and Nicolas Werner committed 4 years ago

I apparently missed this when I originally added the overrides.

fixes #422

The UI still looks ugly, but I have no good idea atm.

fixes #134