[Polling stations] View / Edit polling station details

[aniri]

As an admin user I want to be able to edit a Polling station in the application.

Backend implemented in code4romania/monitorizare-vot#255
Pending backend implementation of code4romania/monitorizare-vot#266

UI available here: https://www.figma.com/file/61NHR7fwmV1Dsv4Pb6F8T7/code4ro_mv_user-management_2018.04.21-(Copy)?node-id=754%3A0

Depends on #222

When clicking on a polling station or selecting the edit option for a polling station from the list, a separate page should open that displays the polling station info.

Permissions:

• master admin (organiser) can view and also edit polling station details
• ngo admin (ngoadmin) can only view the polling station details

Needed functionalities:

• show the selected polling station info GET api/v2/polling-station/{id}
• edit polling station info POST api/v2/polling-station/{id}

Polling stations data model:

• id, address, coordinates, adminTerritoryCode, IdCounty, TerritoryCode, Number

Please use bootstrap classes as much as possible and avoid adding custom css styles to keep the codebase clean & consistent. The new UI should be as similar as possible to the one in figma, not pixel perfect.

Also, make sure all texts are extracted in translation files.