fixes #19 - Convert shell script to python

Fixes issue #19, added python script to generate pdfs and zip
and merge them

app/merge_badges.py

@@ -0,0 +1,61 @@
+import os
+
+if os.system('which rsvg-convert') != 0:
+	os.system('sudo apt-get -y install librsvg2-bin')
+if os.system('which python3') != 0:
+	os.system('sudo apt-get -y install python3')
+if os.system('which pdftk') != 0:
+	os.system('sudo apt-get -y install pdftk')
+
+os.system('python3 generate-badges.py')
+
+BADGES_FOLDER = 'static/badges'
+
+
+input_folders = [file for file in os.listdir(BADGES_FOLDER)
+               if file.lower().endswith(".badges")]
+
+def generate_pdfs(folder_path):
+	svgs = [file for file in os.listdir(folder_path)
+		  if file.lower().endswith('.svg')]
+	for svg in svgs:
+		svg_path = os.path.join(folder_path, svg)
+		pdf_path = os.path.splitext(svg_path)[0] + '.pdf'
+		print('svg: {}'.format(svg_path))
+		print('pdf: {}'.format(pdf_path))
+		os.system('rsvg-convert -f pdf -o {} {}'.format(pdf_path, svg_path))
+
+# Generating PDF files from svg.
+for folder in input_folders:
+	folder_path = os.path.join(BADGES_FOLDER, folder)
+	generate_pdfs(folder_path)
+
+# Merge badges of different types
+input_folders = [file for file in os.listdir(BADGES_FOLDER)
+               if file.lower().endswith(".badges")]
+
+print ('Merging badges of different types.')
+
+for folder in input_folders:
+	folder_path = os.path.join(BADGES_FOLDER, folder)
+	out = folder + '.pdf'
+	out_path = os.path.join(BADGES_FOLDER, out)
+	os.system('pdftk ' + folder_path + '/*.pdf cat output ' + out_path)
+
+final_path = os.path.join(BADGES_FOLDER, 'all-badges.pdf')
+os.system('pdftk ' + BADGES_FOLDER + '/*.pdf cat output ' + final_path)
+
+print ("Created {}".format(final_path))
+print ("Generating ZIP file")
+
+os.system('find static/badges/ \( -iname \*.svg -o -iname \*.pdf \) | zip  -@ static/badges/all-badges.zip')
+
+print ('Generating ZIP of SVG files')
+
+input_folders = [file for file in os.listdir(BADGES_FOLDER)
+               if file.lower().endswith(".badges")]
+
+for folder in input_folders:
+	folder_path = os.path.join(BADGES_FOLDER, folder)
+	file_name = folder_path + '.svg.zip'
+	os.system('find ' + folder_path + ' -type f -name *.svg | zip -@ ' + file_name)