Fix imports and dependencies.

feedbackloop.learner_backup/build.gradle

@@ -10,6 +10,8 @@ dependencies {
     compile group: 'org.encog', name: 'encog-core', version: '3.4'
     implementation group: 'com.opencsv', name: 'opencsv', version: '4.1'
     implementation group: 'commons-io', name: 'commons-io', version: '2.5'
+    implementation group: 'org.apache.httpcomponents', name: 'httpclient', version: '4.5.8'
+    implementation group: 'org.apache.httpcomponents', name: 'fluent-hc', version: '4.5.8'
     // https://mvnrepository.com/artifact/org.apache.spark/spark-mllib
     //runtime group: 'org.apache.spark', name: 'spark-mllib_2.10', version: '1.3.0'
     compile group: 'com.sparkjava', name: 'spark-core', version: '2.9.0'

feedbackloop.learner_backup/src/main/java/de/tudresden/inf/st/eraser/feedbackloop.learner_backup/Main.java

 package de.tudresden.inf.st.eraser.feedbackloop.learner_backup;
 
-import com.intellij.openapi.vcs.history.VcsRevisionNumber;
-import de.tudresden.inf.st.eraser.jastadd.model.*;
-import org.encog.util.csv.ReadCSV;
 import org.encog.util.csv.CSVFormat;
+import org.encog.util.csv.ReadCSV;
 
-import java.util.ArrayList;
 import java.util.Arrays;
-import java.util.List;
 
 public class Main {