Fixed some gradle issues

Plan/build.gradle

@@ -18,25 +18,27 @@ plugins {
 
 apply plugin: 'nebula-aggregate-javadocs'
 
+def determineBuildVersion = {
+    def buildInfo = new ByteArrayOutputStream()
+    exec {
+        commandLine 'git', 'rev-list', '--count', 'HEAD'
+        standardOutput = buildInfo
+    }
+    // Magic number: git rev-list --count cdb13e3b663b18e3938ad5efc60d165fa9301f6e
+    return Integer.parseInt(buildInfo.toString().replaceAll("[^0-9]", "")) - 3529
+}
+def buildVersion = determineBuildVersion()
+
 allprojects {
     wrapper.gradleVersion = "5.5.1"
 
     group "com.djrapitops"
     version "5.0-SNAPSHOT"
 
-    def determineBuildVersion = {
-        def buildInfo = new ByteArrayOutputStream()
-        exec {
-            commandLine 'git', 'rev-list', '--count', 'HEAD', '^cdb13e3b663b18e3938ad5efc60d165fa9301f6e'
-            standardOutput = buildInfo
-        }
-        return buildInfo.toString().replaceAll("[^0-9]", "")
-    }
-
     ext.majorVersion = '5'
     ext.minorVersion = '0'
-    ext.buildVersion = determineBuildVersion()
-    ext.fullVersion = "$majorVersion.$minorVersion build $buildVersion"
+    ext.buildVersion = buildVersion
+    ext.fullVersion = project.ext.majorVersion + '.' + project.ext.minorVersion + ' build ' + project.ext.buildVersion
 
     test {
         useJUnitPlatform()
@@ -115,6 +117,9 @@ subprojects {
         maven { // Velocity Repository
             url = "https://repo.velocitypowered.com/snapshots/"
         }
+        maven { // Nukkit Repository
+            url = "http://repo.nukkitx.com/main"
+        }
         maven { // bStats Repository
             url = "https://repo.codemc.org/repository/maven-public"
         }

Plan/nukkit/build.gradle

@@ -1,9 +1,3 @@
-repositories {
-    maven { // Nukkit Repository
-        url = "http://repo.nukkitx.com/main"
-    }
-}
-
 dependencies {
     compile project(path: ":common", configuration: 'shadow')
     compileOnly project(":api")

Plan/sponge/build.gradle

@@ -4,7 +4,7 @@ plugins {
 
 blossom {
     replaceTokenIn('src/main/java/com/djrapitops/plan/PlanSponge.java')
-    replaceToken('@version@', "$fullVersion")
+    replaceToken('@version@', '' + project.ext.fullVersion)
 }
 
 dependencies {