feat: extension panels

* Snapshot -- Switching branches
* fix classes and hooks for panel componet
* Restore button functionality
* feat: support for expandableToolMenu
* Shift cornerstoneTools config up a layer, and use globalToolSync
* Remaining initCornerstoneTools changes
* Pull in Segmentation Plugin
* Shift MeasurementsPanel to an extension
* Note regarding where data is coming from
* Make sure measurement callback is available
* Bump core version
* Shift MeasurementsTable to a local extensions directory
* Register appCommands as an extension
* Update package dependencies and yarn lock
* Support for panel width
* Ability to pass props to our panel component
* Add a safety check around calling our tacked on method for tool options
* Left sidebar plugins + fix activeIndex prop passed to sidebar.
* fix: viewer height
Now in a shared container w/ top bar, so we need to factor that in when calculating height
* lock file latest
* Update thumbnails if studies has changes
* bump cornerstone version to resolve globalToolSynch history issue
* Default panel to open; studies optional
* Bump minor version for ohif-cornestone-extension
* Simplify button logic
* Accommodate odd roundedButtonGroup value change emit
* Map viewers + selectedViewport instead of pulling off the window

package.json

@@ -76,7 +76,7 @@
   },
   "dependencies": {
     "@babel/runtime": "^7.4.5",
-    "@ohif/extension-cornerstone": "0.0.37",
+    "@ohif/extension-cornerstone": "0.0.38",
     "@ohif/extension-dicom-html": "0.0.3",
     "@ohif/extension-dicom-microscopy": "0.0.8",
     "@ohif/extension-dicom-pdf": "0.0.7",
@@ -86,7 +86,7 @@
     "classnames": "^2.2.6",
     "cornerstone-core": "^2.2.8",
     "cornerstone-math": "^0.1.8",
-    "cornerstone-tools": "^3.13.0",
+    "cornerstone-tools": "^3.15.1",
     "cornerstone-wado-image-loader": "^2.2.3",
     "dcmjs": "^0.4.7",
     "dicom-parser": "^1.8.3",