bug fixes for gavldac's solve improvement

src/gui/Nav.java

@@ -297,7 +297,7 @@ public class Nav extends JPanel {
      */
     private void openFile(String filename) {
     	//file path is not working for everyone had to append src/ to run
-        File f = new File("src/resources/" + filename + ".sdku");
+        File f = new File("resources/" + filename + ".sdku");
         // If the file does not exist, print an error message and return.
         if(f == null || !f.exists() || f.isDirectory() || !f.canRead()) {
             System.out.println(

src/gui/backend/Settings.java

@@ -185,8 +185,10 @@ public class Settings {
                             fontName + ".ttf";
         else if(os.startsWith("mac"))
             fontFilepath = "/Library/Fonts/" + fontName + ".ttf";
-        else
-            fontFilepath = "/usr/share/fonts/" + fontName + ".ttf";
+        else {
+            fontName = "HackNerdFontMono-Regular";
+            fontFilepath = "/usr/share/fonts/TTF/" + fontName + ".ttf";
+        }
 
         // Register the font with the GraphicsEnvironment.
         try {
@@ -538,4 +540,4 @@ public class Settings {
         this.autoSaveFrequency = autoSaveFrequency;
         updateSettingsFile();
     }
-}
+}