Anonymous>Jobs page> list of countries update

[gardenia-homsi]

Requirement
Description: In the list of countries we should perhaps limit the list to the counties who actually exist in the jobs and sort them alphabetically instead of having a long list of values that 90% of them will return nothing

Direction
Steps to reproduce the behavior:

1. Go to https://devalopers.herokuapp.com/
2. Click on "Jobs" tab in the landing page
3. Check the list of country in the filtering

behavior required
limit the list of countries to the names who actually exist in the jobs and sort them alphabetically