Remove Kebab Menu on All Pages Except Observation

[andrei-manda]

As is

The kebab menu with the 'Manage My Polling Station' option is visible on every page accessed via the bottom navigation menu.

Should be

• The kebab menu should be displayed only on the Observation page.

[luciatugui]

Will be ready for testing on next staging deploy.

[MarG66]

@andrei-manda Passed testing.