Users must change language(EN/ET) on every main menu tab. Bug

[mmeest]

Issue
Users must change language(EN/ET) on every main menu tab.

Description
When navigating on main menu links language selection will not be constant.
For example selecting on main page English language and navigating to 'Oksionikeskkond' / 'Auction environment'
this page is still displayed in Estonian. Naviganting back to main page 'Avalik portaal' / 'Public portal'
page is in English as originally was set.

Steps to reproduce:

1. Navigate to https://www.internet.ee/
2. On language selector choose 'ENG'
3. On header menu click 'Oksjonikeskkond' / 'Auction portal'

Expected result:
Opened site will be displayed in English - as selected on main page.

Actual result:
Opened site is displayed in Estonian.

Comment language selection will be saved by the selection on different tabs.
That means if navigating back to the main page, language that was selected there is active.