- Upgraded play sbt plugin to 2.7.3

- Upgraded native packager to 1.3.15
- Upgraded codacy to 1.3.14

Author: Hariharan Ramanathan

project/plugins.sbt

@@ -1,13 +1,13 @@
 // The Play plugin
-addSbtPlugin("com.typesafe.play" % "sbt-plugin" % "2.6.14")
+addSbtPlugin("com.typesafe.play" % "sbt-plugin" % "2.7.3")
 
 // build management and packaging
 addSbtPlugin("com.eed3si9n" % "sbt-buildinfo" % "0.7.0")
-addSbtPlugin("com.typesafe.sbt" % "sbt-native-packager" % "1.3.2")
+addSbtPlugin("com.typesafe.sbt" % "sbt-native-packager" % "1.3.15")
 
 // coverage
 addSbtPlugin("org.scoverage" % "sbt-scoverage" % "1.5.1")
-addSbtPlugin("com.codacy" % "sbt-codacy-coverage" % "1.3.12")
+addSbtPlugin("com.codacy" % "sbt-codacy-coverage" % "1.3.14")
 
 // preparation for dependency checking
 addSbtPlugin("net.virtual-void" % "sbt-dependency-graph" % "0.9.1")