Added GUI [experimental] (#83)

* - Initial GUI

* - Implemented feeding dummy data

* - Separated presenation layer to be able to show results in GUI

* - Some computation possible

* - Buildable unit tests

* - internal refactoring started

* - Added transactions returning apart from final results

* - Transactions are being reported into T Display

* - Added adding and removing of documents

* - Added fix to Notes scalin/g

* - Fix to CI

.github/workflows/building.yaml

@@ -45,6 +45,7 @@ jobs:
         - name: Install system dependencies
           run: |
             sudo apt-get update
+            sudo apt-get install -y libx11-dev libxext-dev libxft-dev libxinerama-dev libxcursor-dev libxrender-dev libxfixes-dev libpango1.0-dev
         - uses: actions/checkout@v2
         - uses: actions-rs/toolchain@v1
           with: