Gradle / maven

Fix archive names (includes project/module name + version)
Generate MD5 hash alongside jar
Improve build time
- asynchronous building
- enable daemon
- change scope of a few statements
- skip building of 3 jars
Add filtering to the plugin.yml (maven/gradle)
Bump version to 3.3.0 in pom

Bukkit/src/main/resources/plugin.yml

@@ -1,6 +1,6 @@
-name: PlotSquared
+name: ${name}
 main: com.plotsquared.bukkit.BukkitMain
-version: 3.3.0
+version: ${version}
 load: STARTUP
 description: >
              Easy, yet powerful Plot World generation and management.