Remove hardcoded links

Closes e/infra/backlog#635

See merge request e/cloud/my-spot!109

DDG safesearch

Closes e/backlog#4434

See merge request e/cloud/my-spot!95

add missing icons for default engines

See merge request e/cloud/my-spot!108

fix language selection in google engine

See merge request e/cloud/my-spot!107

enable logos of search engines

See merge request e/cloud/my-spot!106

update libs

See merge request e/cloud/my-spot!105

Resolve "Digg engine not working"

Closes #82

See merge request e/cloud/my-spot!103

Update ina engine xpath values

Closes #79

See merge request e/cloud/my-spot!98

show Debug Info in error page

Closes #81

See merge request e/cloud/my-spot!101

update google engine from upstream

Closes #83

See merge request e/cloud/my-spot!100