Locale and search language was always defined with english value.

This patch inits the locale on `pre_request` in order to define the
default value of locale and language preferences.

Plus the `best_match` function provided by flask babel library did not
work as expected. So the function `match_language` provided
by searx is used to detect that the language from Accepted-Language
header can be used in searx project.

args parameters are merged in form in pre_request, so
this patch removes that useless operation.

With SEARX_LOGGER setting we can run spot with
the expected logger level.

Update footer with my-spot url and version

See merge request !30

Deploy to Test environment

See merge request !29

Rework python package and docker build

See merge request !28

Put google results on top

See merge request !27

The aim of a search engine is to return the best results, we put google
on top to keep users on spot.

The request and the response are outdated, a patch is required
to fix that engine.

rebase from upstream and fix unit tests about /stats endpoint

See merge request !26

/stats endpoint is remove in spot since 87574704.
This patch removes the test about /stats endpoint, and it removes
stats dependency in about page.

- Moved template components to their own folder
- Added a better 404 page
- Removed stats page (since stats are included in the engines preferences where they are more useful)

Added basic page for privacy related content (i need to see what is going here so i can make a proper layout)

Add accidentally removed import to search.py

Remove asksteem

Fix docker build issue

See merge request !25

Update test to be compatible with Daniel latest commit that failed

[FIX] image_proxify

docker: allow configuring http proxy via env variables

Unsplash image engine