UI Improvements

This new update has UI improvements in many parts of the software.

- Encounter notes now support HTML tags and can be put in a "View Mode" where they are rendered using those tags.
- Improvements to combat evaluations user interface.
- Added buttons on combat form and encounter engagements to open details of the character.
- Added ability to cut/copy/paste asset characters, items, and abilities between assets. This makes it much easier to copy assets from SRD 5.1 and makes your own versions / tweaks in your own asset.