[Responses] Update responses page to new UI

[aniri]

Update view responses page to new UI (make it as similar as possible to the new one): https://www.figma.com/file/61NHR7fwmV1Dsv4Pb6F8T7/code4ro_mv_user-management_2018.04.21-(Copy)?node-id=754%3A0

• latest responses list
• filter responses by observer phone no or county
• view responses from an observer - all forms + notes

Please use bootstrap classes as much as possible and avoid adding custom css styles to keep the codebase clean & consistent.

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

[aniri]

in progress @Andrei0872