Added father_alive field to Orphan model

OSRA-221 #code-review
Merge pull request #143 from motasem-salem/is_father_dead

Added father_alive field to Orphan model
OSRA-221 OSRA-222 #resolve
Removed all hardcoded gender strings and put them in yaml config file
Added failing feature
Implemented gender filter for Orphans

OSRA-204#Code-Review
code review
Code review
Merge pull request #144 from NikitaAvvakumov/orphan_gender_filter

OSRA-204 #Resolved
Create basic Agent views & scenarios; add #full_name method to Agent; clean up admin_users_steps; OSRA-235
DRY step definition for links to index pages
Clarify step definition for links to index pages; OSRA-235
Refactor Agent to use agent_name instead of first_name & last_name; OSRA-233
Add Agent field to Sponsor form
Add links to Sponsor & Agent views to each others pages
Pause. B264 broke osra-testing
Add scenario to test for agent link on sponsor page
Add scenario to test for sponsor link on agent page
Remove unnecessary if from agent show view; OSRA-235 OSRA-236 OSRA-205 #Code-Review
Rename Agent to User: migrations, model, ActiveAdmin, factory
Recreate User(as Agent)/Sponsor association