removed bintray and replaced it with a local mvn repos (#1785)

* removed bintray and replaced it with a local mvn repos

* checkout scm

* publish stage in Jenkinsfile

Jenkinsfile

@@ -1,6 +1,6 @@
 node {
   stage('Preparation') {
-    git url: 'https://github.com/raoulvdberge/refinedstorage.git', branch: 'mc1.12'
+    checkout scm
   }
   cache(maxCacheSize: 250, caches: [
     [$class: 'ArbitraryFileCache', excludes: 'modules-2/modules-2.lock,*/plugin-resolution/**', includes: '**/*', path: '${HOME}/.gradle/caches'],
@@ -14,4 +14,7 @@ node {
   stage('Archive artifacts') {
     archiveArtifacts 'build/libs/*.jar'
   }
+  stage('Publish artifacts') {
+    sh "./gradlew publish"
+  }
 }