2.1.0

1. Add new page which shows the history of downloaded maps, since the history reacts to specific command that was issued by the user (host_workshop_map), you can also easily delete the unnecessary entries from the list. The app stores the history data and downloaded previews in the app folder right were the binary reside.
2. Add log window to help catch any errors or messages.
3. Some minor changes to layout to improve usability (such as Power Panel now always stays on top and will not disappear when scrolling).
4. Some minor changes in the code and json parsing.