Add Paperless-ng document management system HTML title fingerprint

[mkienow-r7]

Description

Adds Paperless-ng document management system HTML title fingerprint.

Notes

Fingerprinted Paperless-ng version 1.5.0.

• favicon.ico

  $ file favicon.ico
  favicon.ico: MS Windows icon resource - 6 icons, 16x16, 32 bits/pixel, 32x32, 32 bits/pixel
  $ md5 favicon.ico
  MD5 (favicon.ico) = 32a136901323f2b2eb12d529e10bf064

The favicon hash matches both Paperless-ngx and Paperless.

Motivation and Context

Improved coverage

How Has This Been Tested?

• bundle exec ./bin/recog_verify xml/html_title.xml
• rake tests

Types of changes

• New feature (non-breaking change which adds functionality)

Checklist:

• [x] I have updated the documentation accordingly (or changes are not required).
• [x] I have added tests to cover my changes (or new tests are not required).
• [x] All new and existing tests passed.