More gap between search results increase the readability. Currently, the result page is just filled with text.

Avoid UnicodeEncodeError when redirecting standalone output

This modification allows us to deactivate engines in settings.yml
without commenting them out

show engine errors in infobox && add new error alert

long suggestions now wrap around the box instead of going overboard.

fix github url

[fix] fix xpath of google images

[fix] fix duckduckgo's offset

First page now starts with 0 offset,
rather than starting on the 30th result.

DuckDuckGo returns 30 results on each page.

Update translations

Add free software directory engine

[mod] the static and templates directories can be defined in the settings.yml

The exact order is
* first from SEARX_SETTINGS_PATH,
* if not found then from searx code base,
* if not found then from /etc/searx/settings.yml
* if not found an exception stops searx loading