Searx version is useful for external report tool like stats.searx.xyz.
Then is better for spot project to track the upstream tag to avoid conflict
during the next rebase. The new spot tag format is the folowing:
`<last searx tag>+<spot tag>`. I suggest to use the spot tag with the date format
`YYYYMMDD`. A full tag should be `v0.15.0+20190719`.

Ref: #36

Close: #34

Try different settings:
- disable Google
- enable DuckDuckGo

google_images :  use JSON embedded in HTML (engine expected pure JSON)

Remove some engines : subtitleseeker, seedpeer, swisscows

http://www.subtitleseeker.com and http://www.seedpeer.eu don't exist anymore.
https://swisscows.ch/ has change : the engine needs to be updated

[fix] seznam engine

requirements.txt : update dependencies

Close: #31

This pathc fixes the render of the first page. This one have to display
general results plus a sample of 5 images and 2 videos.

Previously, torrent and videos results were included.

This change is related to the comment https://gitlab.e.foundation/e/cloud/my-spot/issues/30#note_10233

simple theme : use instance_name for page title

This reverts commit 63e8c8b1.

Fix google image search engine

- Because there is not full image url in the dom, we replace "image_url" with the same url as the "url" (url of source).
  See example HTML https://gist.github.com/Nachtalb/2dea8a4d2c723c49226ad9645838121f
- Remove unused import
- Fix google image search title
- Keep google image safe value up to date

[fix] DuckDuckGo Images requests

In order to use another cache tool or to use spot without cache
system.