scrollview in dialog
There are still bugs. If you're interrested I create a second pull request, when I solved it.
Thanks for your grat app. I've found it on F-Droid.
I changed the layout of the main dialog. This will also solve #9 (if I understood right). I had the problem also, when the content consists of long text. This is also the reason why title and content have now their own column.
Here a screenshot from my changes:

I made a scond commit.
I'm actually against this solution, as Google advices to avoid scrolling content within dialogs. See the Material Design Guidelines Dialogs-behavior as reference. To fix your and the #9 issue, a full screen dialog (as described also within the official guidelines here) seems to be the best solution.
I'm currently busy on working on other projects, so this has low-priority for me. In case you're still interested in creating a fix, you could try to implement a custom and responsive full-screen layout that I'll merge into the next release.