Upgrade the build system

This PR upgrades the build system to use GeoExporer's 4.1 build system. It needs testing.

In order to build I had to make one change in the pom.xml of externals2/suite I will ask around if there are ways around this

```
diff --git a/pom.xml b/pom.xml
index ae874c6..89b4255 100644
--- a/pom.xml
+++ b/pom.xml
@@ -130,7 +130,7 @@
 
  <build>
     <plugins>
-       <plugin>
+<!--       <plugin>
          <groupId>pl.project13.maven</groupId>
          <artifactId>git-commit-id-plugin</artifactId>
          <version>2.1.4</version>
@@ -147,7 +147,7 @@
            <verbose>false</verbose>
            <dateFormat>yyyy-MM-dd'T'HH:mm:ssZ</dateFormat>
          </configuration>
-       </plugin>
+       </plugin>-->
        <plugin>
          <artifactId>maven-antrun-plugin</artifactId>
          <version>1.7</version>
```