Merge pull request #1 from vinsol/epic_customer_crud

Epic customer crud
Add customer management by admin
Fix specs issues
Merge branch 'develop' of https://github.com/vinsol/Appointr into develop
Fix service search issue.
Merge branch 'sprint-1' into develop
Issue fix for staff edit page.
Remove unnecessary routes.
Merge pull request #9 from vinsol/manage-customers

Manage customers
Add bootstrap css.
Fix bootstrap :notice issues.
CR and QA fixes.
Fix availability_filter.js
Merge branch 'sprint-2' into availabilities-crud
Fix  merge conflicts from sprint-2 to availabilities-crud
Merge pull request #8 from vinsol/availabilities-crud

Availabilities crud
Issue fix for customer layout
Add customers tab for admin
edit appointment
fix merge issues from sprint-2 to calendar-view