Improve commandline handling control flow

This uses a switch on the action value, which makes it more clear what
code runs when. No actual behaviour is changed, most of the changes in
this commit are indentation changes.

app/src/processing/app/Base.java

@@ -430,7 +430,9 @@ public class Base {
       }
     }
 
-    if (action == ACTION.UPLOAD || action == ACTION.VERIFY) {
+    switch (action) {
+      case VERIFY:
+      case UPLOAD:
         // Set verbosity for command line build
         Preferences.set("build.verbose", "" + doVerboseBuild);
         Preferences.set("upload.verbose", "" + doVerboseUpload);
@@ -457,8 +459,8 @@ public class Base {
 
         // No errors exit gracefully
         System.exit(0);
-    }
-
+        break;
+      case GUI:
         // Check if there were previously opened sketches to be restored
         restoreSketches();
 
@@ -471,6 +473,8 @@ public class Base {
         if (Preferences.getBoolean("update.check")) {
           new UpdateCheck(this);
         }
+        break;
+    }
   }
 
   protected void processBoardArgument(String selectBoard) {