485 Upgrade Project and Build to Java 11 (#496)

* Updates gradle to 5.1.1

* Updated to run application from intellij using installed Java 11.
Resolves issues with Java 9 deprecations.

* Updates gradle build dependencies and other deprecation issues.

* Updates gradle to produce OS-specific builds.

* Updates the beryx runtime plugin to 1.1.1 to resolve issue with zipping
each of the target distributions.

* Import cleanup

* Resolves issue with Look and Feel error on Max OSX
Resolves issue with building OSX package
Resolves issue with excessive logging about JMBE library.

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,25 @@
-#Sun Nov 25 05:28:28 EST 2018
+#
+# *******************************************************************************
+# sdrtrunk
+# Copyright (C) 2014-2019 Dennis Sheirer
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>
+# ******************************************************************************
+#
+
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.1.1-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-4.3.1-all.zip