Do not store the summary of a commit as its message.

src/de/uni_passau/fim/seibt/gitwrapper/repo/Repository.java

@@ -482,7 +482,7 @@ public class Repository {
                         commitFile = dir.toPath().resolve(Paths.get(lineScanner.nextLine().trim())).toFile();
                         break;
                     case SUMMARY:
-                        commit.setMessage(lineScanner.nextLine().trim()); // TODO this is NOT the message, it is the summary (first line of the message)
+                        // Skip the summary of the commit as it is just the first line of its message (for which there is a getter).
                         break;
                     case BOUNDARY:
                         // We do not store the information that this commit was the boundary of the 'git blame' call.