fix: switch the order of the period option
fix: remove container from scheduler template
fix: remove page header as it was occupying too much space
feat: create nav tabs
feat: create temporary content for nav tabs - select service, view staff and week availability
fix: move scheduler table and calendar into perform assignment tab
feat: place the tab contents in a container for each tab; headers for the tabs;
fix: rename table id
fix: rename calendar id; remove page header;
feat: buttons in the page top
feat: table footer buttons
feat: calendar footer buttons
feat: a div to place the case service table
Merge branch 'master' into developer