Show the original web page by default if parsing fails

[proletarius101]

Issue details

Duplicate?

Have you searched the issues of this repository if your issue is already known? yes

Actual behaviour

• it shows the parsing error when read mode parsing fails

Expected behaviour

• the original web page should be shown like what Pocket does

Steps to reproduce the issue

1. Save a link that wallabag can't extract the article content from
2. Open the saved item

Environment details

• wallabag app version:
• wallabag app installation source (e.g. Gplay, F-Droid, manual):
• Android OS version:
• Android ROM (e.g. stock, LineageOS, SlimRom,…):
• Android hardware:
• wallabag server version:
• Do you have Two-Factor-Authentication enabled?: yes/no

Logs

wallabag server

Please paste relevant wallabag server logs here (from file <wallabag>/var/logs/prod.log):

Web server

Please paste relevant web server logs (e.g. from nginx, Apache, …) here:

NOTE: Be super sure to remove sensitive data like passwords, note that everybody can look here!

Your experience with wallabag Android app

Have you had any luck using wallabag Android app before? (Sometimes we get tired of reading bug reports all day and a lil' positive end note does wonders)