Add new sandbox (#741)

* Add new sandbox files and remove temporary unavailable notice
* remove old deployment script
* adapt application properties
* restructure hawkbit-runtime
* move sandbox description.
* adapt license checks
* Introduce review findings and add new docker files
* Remove redundant profile and attribute
* Update website
* redirect to sandbox
* getting started
* Add description for docker folder and renew favicon

hawkbit-runtime/docker/0.2.1-mysql/Dockerfile

@@ -0,0 +1,15 @@
+FROM hawkbit/hawkbit-update-server:0.2.1
+
+ENV MARIADB_DRIVER_VERSION=2.2.4
+
+COPY KEYS .
+
+RUN set -x \
+    && apk add --no-cache --virtual build-dependencies gnupg unzip libressl wget \
+    && gpg --import KEYS \
+    && wget -O $JAVA_HOME/lib/ext/mariadb-java-client.jar --no-verbose http://downloads.mariadb.com/Connectors/java/connector-java-$MARIADB_DRIVER_VERSION/mariadb-java-client-$MARIADB_DRIVER_VERSION.jar \
+    && wget -O $JAVA_HOME/lib/ext/mariadb-java-client.jar.asc --no-verbose http://downloads.mariadb.com/Connectors/java/connector-java-$MARIADB_DRIVER_VERSION/mariadb-java-client-$MARIADB_DRIVER_VERSION.jar.asc \
+    && gpg --verify --batch $JAVA_HOME/lib/ext/mariadb-java-client.jar.asc $JAVA_HOME/lib/ext/mariadb-java-client.jar \
+    && apk del build-dependencies
+
+ENTRYPOINT ["java","-jar","hawkbit-update-server.jar","--spring.profiles.active=mysql","-Xms768m -Xmx768m -XX:MaxMetaspaceSize=250m -XX:MetaspaceSize=250m -Xss300K -XX:+UseG1GC -XX:+UseStringDeduplication -XX:+UseCompressedOops -XX:+HeapDumpOnOutOfMemoryError"]

hawkbit-runtime/docker/0.2.1-mysql/KEYS

@@ -0,0 +1,40 @@
+-----BEGIN PGP PUBLIC KEY BLOCK-----
+Version: SKS 1.1.6
+Comment: Hostname: pgp.mit.edu
+
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+-----END PGP PUBLIC KEY BLOCK-----