Add mithril.js dependency

.prettierignore

@@ -0,0 +1,14 @@
+# Python-related
+venv/
+.venv/
+__pycache__/
+.mypy_cache/
+
+# JavaScript-related
+node_modules
+
+# Local instance data and configuration
+instance/
+
+# Libraries
+ui/static/lib

.prettierrc.json

@@ -0,0 +1,5 @@
+{
+    "tabWidth": 4,
+    "semi": false,
+    "arrowParens": "avoid"
+}

karaokatalog/ui/static/lib/LICENSE.mithril.txt

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+The MIT License (MIT)
+
+Copyright (c) 2017 Leo Horie
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.