next button not visible if no data collections are set
tests for navigable card layout when no data collections selected
fixed decision making for navigation buttons
main toolbar renders buttons on layer removal
proper counting of items in layer store
fixed test - 'next' button on main toolbar hidden on load
moved logic of next button display to main toolbar
moved next button tests to MainToolbarSpec
mocking maintoolbar a bit better in mainpanel tests
using getCount to get number of records in ActiveGeoNetworkRecordStore
Merge pull request #488 from aodn/issue_451

Issue 451