Remove empty lines in Content field of document.

purgePaperlessEmptyLines.py

#!/usr/bin/env python3
import sqlite3
import re

conn = sqlite3.connect('/opt/paperless/data/db.sqlite3')
c = conn.cursor()
d = conn.cursor()

for row in c.execute('''Select id,content from documents_document order by id asc'''):
  purgedContent = re.sub('(\r|\n)+','\n', row[1])
  if (purgedContent != row[1]):
    d.execute("update documents_document set content=:content where id=:id",
      {'content':purgedContent, 'id': row[0]}
      )

conn.commit()
conn.close()