Integrate pdfCropMargins for cropping PDFs (#29)

static/upload.html

@@ -18,6 +18,7 @@
 			<tr><td class="right"><label for="urlinput"><strong>Send url</strong></label></td><td><input type="url" name="url" id="urlinput" autocomplete="off" style="width: 100%"></td></tr>
 			<tr><td class="right"><input type="checkbox" name="kepubify" id="kepubify" checked /></td><td><label for="kepubify"><strong>Kepubify</strong> <em>Kobo only</em></label></td></tr>
 			<tr><td class="right"><input type="checkbox" name="kindlegen" id="kindlegen" checked /></td><td><label for="kindlegen"><strong>KindleGen</strong> <em>Kindle only</em></label></td></tr>
+			<tr><td class="right"><input type="checkbox" name="pdfcropmargins" id="pdfcropmargins" /></td><td><label for="pdfcropmargins"><strong>Crop margins of pdfs</strong></label></td></tr>
 			<tr><td class="right"><input type="checkbox" name="transliteration" id="transliteration" /></td><td><label for="transliteration"><strong>Transliteration of filename</strong></label></td></tr>
 			<tr class="center"><td colspan="2"><input type="submit" value="Upload and send" /></td></tr>
 		</table>
@@ -31,7 +32,7 @@
 	</div>
 	<hr/>
 	<div class="center">
-		Created by djazz. Powered by <a href="https://koajs.com/" target="_blank">Koa</a>, <a href="https://pgaskin.net/kepubify/" target="_blank">Kepubify</a> and <a href="https://www.amazon.com/gp/feature.html?ie=UTF8&docId=1000765211" target="_blank">KindleGen</a><br/>
+		Created by djazz. Powered by <a href="https://koajs.com/" target="_blank">Koa</a>, <a href="https://pgaskin.net/kepubify/" target="_blank">Kepubify</a>, <a href="https://www.amazon.com/gp/feature.html?ie=UTF8&docId=1000765211" target="_blank">KindleGen</a> and <a href="https://github.com/abarker/pdfCropMargins" target="_blank">pdfCropMargins</a><br/>
 		Source code on <a href="https://github.com/daniel-j/send2ereader" target="_blank">Github</a> - <a id="siteurl">https://send.djazz.se</span>
 	</div>
 </div>