[fix] #452 remove crappy code
[add] link to empty cache in config screen, #454
duplicate check added. fix of issue #400
Merge pull request #460 from mariroz/dev

duplicate check added. fix of issue #400
[add] script to make the install more user friendly #466
Merge branch 'dev' of https://github.com/wallabag/wallabag into dev
[fix] security problems with tags
Merge pull request #468 from wallabag/dev

1.5.1