* Show connectivity on expand accordion

* [skip ci] remove comments

Co-authored-by: xgui3783 <xgui3783@gmail.com>

* Region sidebar accordion

* chore UI tweaks (#606)

* chore: reordered explore in other tmpl
chore: explore in other tmpl btns smaller
chore: regional features show tally

* bugfix: fix tests

* fix lint

* upgrade connectivity (599 bug fix included) (#612)

Co-authored-by: xgui3783 <xgui3783@gmail.com>

add travis ci

fixes #502

chore: auto gen images

Co-authored-by: Xiao Gui <xgui3783@gmail.com>
Co-authored-by: fsdavid <daviti1@mail.com>

chore: fixed draggable dataset preview

chore: added test to prevent regression

chore: update dataset previewer dep

chore: implemented test to avoid regression

chore: added tests for history.service
chore: added tests to urlUtil

Add Left Click Region Tool Menu

Add tools menu items

Add select and navigate buttons to toolbar menu

First Version for region tool menu

Corrections of region tools menu

Changes region tools menu

Corrections of names in region menu

make connectivity service variables public

make connectivity service public

connectivity matrix with npm web component (plus open sidebar state management (fixed context menu overflow and CaptureclickListener subscriptions

corrections after rebase