Merge pull request #736 from mariroz/dev

fix of issue #718: Error parsing file imported from Pocket #718
Merge pull request #737 from mariroz/dev

fix of issue #677: When downloading images, wallabag doesnt respect html "base" tag, tnx to @fivefilters
security check
fix for #738
new config file, fix for #740
1.7.1
Merge pull request #751 from mariroz/dev

quick fix of issue #750: mulipage content for politico.com/magazine articles
fix of issue #619 and other similar, error in JSLikeHTMLElement: node no longer exists.