Generic TopBar component for Catalog/Cluster views (#2882)

* Rendering close button in cluster view

Signed-off-by: Alex Andreev <alex.andreev.email@gmail.com>

* Changing Icon hover style

Signed-off-by: Alex Andreev <alex.andreev.email@gmail.com>

* Moving onClick handler away

Signed-off-by: Alex Andreev <alex.andreev.email@gmail.com>

* Removing sidebar compact view

Signed-off-by: Alex Andreev <alex.andreev.email@gmail.com>

* Removing 'compact' refs in SidebarItem

Signed-off-by: Alex Andreev <alex.andreev.email@gmail.com>

* Wrapping Catalog with MainLayout

Signed-off-by: Alex Andreev <alex.andreev.email@gmail.com>

* Making sidebar resizing indicator visible on hover

Signed-off-by: Alex Andreev <alex.andreev.email@gmail.com>

* Adding TopBar to catalog view

Signed-off-by: Alex Andreev <alex.andreev.email@gmail.com>

* Using TopBar in cluster views

Signed-off-by: Alex Andreev <alex.andreev.email@gmail.com>

* Cleaning up Sidebar styles

Signed-off-by: Alex Andreev <alex.andreev.email@gmail.com>

* Using getActiveClusterEntity() for searching

Signed-off-by: Alex Andreev <alex.andreev.email@gmail.com>

* Fix resizing anchor position

Signed-off-by: Alex Andreev <alex.andreev.email@gmail.com>

* Align cluster name on left

Signed-off-by: Alex Andreev <alex.andreev.email@gmail.com>

* Removing unused files

Signed-off-by: Alex Andreev <alex.andreev.email@gmail.com>

* Removing unused css var

Signed-off-by: Alex Andreev <alex.andreev.email@gmail.com>

* Showing Topbar in ClusterStatus page

Signed-off-by: Alex Andreev <alex.andreev.email@gmail.com>

* Removing TopBar from ClusterManager

Signed-off-by: Alex Andreev <alex.andreev.email@gmail.com>

src/renderer/components/+welcome/welcome.scss

@@ -22,6 +22,7 @@
 .Welcome {
   text-align: center;
   width: 100%;
+  height: 100%;
   z-index: 1;
 
   .box {