Lots of changes (#70)

Image extraction and conversion to formats 

Multi parallel file execution for all forms so you can input multiple files quickly 

Any file at all pdf using libreoffice, super powerful
Sadly makes docker image larger but worth it 

OCR PDF using ocr my pdf
Works awesomely for adding text to a image

Improved compression using ocr my pdf app

Settings page with custom download options such as 
- open in same window
- open in new window
- download
- download as zip

Update detection in settings page it should show notification if there is a update (very hidden)

UI cleanups

Add other image formats to PDF to Image

Various fies to icons, and pdf.js usage

src/main/java/stirling/software/SPDF/utils/PdfUtils.java

@@ -32,7 +32,6 @@ import org.springframework.http.ResponseEntity;
 import com.itextpdf.text.Document;
 import com.itextpdf.text.DocumentException;
 import com.itextpdf.text.pdf.PdfWriter;
-import com.spire.pdf.PdfDocument;
 
 public class PdfUtils {
 
@@ -172,16 +171,7 @@ public class PdfUtils {
         return PdfUtils.boasToWebResponse(baos, docName);
     }
     
-    public static ResponseEntity<byte[]> pdfDocToWebResponse(PdfDocument document, String docName) throws IOException {
-
-        // Open Byte Array and save document to it
-        ByteArrayOutputStream baos = new ByteArrayOutputStream();
-        document.saveToStream(baos);
-        // Close the document
-        document.close();
-
-        return PdfUtils.boasToWebResponse(baos, docName);
-    }
+  
 
     public static ResponseEntity<byte[]> pdfDocToWebResponse(PDDocument document, String docName) throws IOException {