Merge pull request #450 from wallabag/dev

1.5.0
Merge pull request #468 from wallabag/dev

1.5.1
Merge pull request #469 from wallabag/dev

version number 1.5.1
Merge pull request #481 from wallabag/dev

1.5.2
acc
Merge remote-tracking branches 'upstream/dev' and 'origin/master' into dev
Update brazilian translation
Correct README.md
Merge pull request #563 from camporez/dev

Update brazilian translation
Update brazilian traslation title to "Português (Brasil)"
Merge pull request #566 from camporez/dev

Update brazilian traslation title to "Português (Brasil)"
fix of #115 - stay connected and session livetime
Merge pull request #567 from mariroz/fix-session-livetime

fix of #115 - stay connected and session livetime
fix of #115, server relater config value added
Merge pull request #572 from mariroz/fix-session-livetime

fix of #115, server relater config value added
fix of  _SESSION - indefined variable
Merge pull request #576 from mariroz/fix-session-livetime

fix of  _SESSION - indefined variable
fix of issue under nginx and php-fpm
Merge pull request #581 from mariroz/fix-session-livetime

fix of issue under nginx and php-fpm
Merge pull request #1 from wallabag/dev

Dev