Spec for concept-b changes

specs/improvements_to_concept_b_implementation.adoc

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+= Improvements/Enhancements required in concept-b implementation of Tendrl UI
+
+Following are the changes to be done in the concept-b implementaion -
+
+* Remove expanded view for hosts from cluster list view. UX - https://redhat.invisionapp.com/share/8QCOEVEY9#/screens/244738628
+* Modal for showing import task errors. UX - https://redhat.invisionapp.com/share/8QCOEVEY9#/screens/244738627
+* Add a link to the 'All Clusters' view to open the import task details in a new page (at this point the left navigation will be hidden). Once a cluster is successfully imported, a link will be provided to direct the user to 'Cluster detail' views for the newly imported cluster.
+* In all list views, use buttons to show primary actions and kebab menu to show secondary actions.
+* Add 'Volumes count' and 'Alerts count' on cluster list view.
+* Add 'Bricks count' on host list view.
+* Integrate cluster specific Events and Tasks APIs.
+
+=== Impacted Modules:
+
+==== Tendrl API impact:
+
+Required from API - 
+
+* Volumes and Alerts count in '/api/1.0/clusters' API.
+* Bricks count in '/api/1.0/clusters/{cluster_id}/nodes' API.
+* A way to get the import task id for unmanaged cluster in '/api/1.0/clusters' API to fetch task details for it. Unmanged clusters should have a property 'task_id' which will correspond to import task in clusters API.
+* API for fetching events and tasks per cluster level.
+
+=== Assignee(s):
+
+Primary assignee:
+  gnehapk
+
+Other contributors:
+  None
+
+=== Work Items:
+
+https://github.com/Tendrl/ui/issues/780
+
+== Dependencies:
+
+https://github.com/Tendrl/api/issues/341
+
+https://github.com/Tendrl/api/issues/342
+
+https://github.com/Tendrl/api/issues/329
+
+https://github.com/Tendrl/api/issues/343