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

yarn.lock

@@ -1214,10 +1214,10 @@
     universal-user-agent "^2.0.0"
     url-template "^2.0.8"
 
-"@ohif/extension-cornerstone@0.0.37":
-  version "0.0.37"
-  resolved "https://registry.yarnpkg.com/@ohif/extension-cornerstone/-/extension-cornerstone-0.0.37.tgz#d9d31409ffbc773dde17767daa02b87f461cf11a"
-  integrity sha512-090WPGXOYIxZjQe0mIM7SipgR3ggUZpbtWpwg7huWC0PQObIM3Juy4L8mtss23OKaKsmrmVxUaFc5NRQhs+Z+w==
+"@ohif/extension-cornerstone@0.0.38":
+  version "0.0.38"
+  resolved "https://registry.yarnpkg.com/@ohif/extension-cornerstone/-/extension-cornerstone-0.0.38.tgz#c1cdf2796bef441a293bcc045f9748c7b2c1395f"
+  integrity sha512-xWvK04s2xwjNlIvz4BpJ5pWP8wNmW9kpud1zkywR+TFYgthH2X64Tr01VZTOh8Mi+0Xkwe5IElb4Sw2aVA4SBg==
   dependencies:
     "@babel/runtime" "^7.2.0"
     classnames "^2.2.6"
@@ -3796,10 +3796,10 @@ cornerstone-math@^0.1.8:
   resolved "https://registry.yarnpkg.com/cornerstone-math/-/cornerstone-math-0.1.8.tgz#68ab1f9e4fdcd7c5cb23a0d2eb4263f9f894f1c5"
   integrity sha512-x7NEQHBtVG7j1yeyj/aRoKTpXv1Vh2/H9zNLMyqYJDtJkNng8C4Q8M3CgZ1qer0Yr7eVq2x+Ynmj6kfOm5jXKw==
 
-cornerstone-tools@^3.13.0:
-  version "3.14.1"
-  resolved "https://registry.yarnpkg.com/cornerstone-tools/-/cornerstone-tools-3.14.1.tgz#9a15bca1c4ab96698e91b35f38b5cfa165d58032"
-  integrity sha512-gfYhRawZ7oZhft1klF2b6IcTciN3f05YM8v4AWT6sVcPiA+MkRPf9GVcrmUOUDsfUtg8RG0TAAO7lN9lRr92BQ==
+cornerstone-tools@^3.15.1:
+  version "3.15.1"
+  resolved "https://registry.yarnpkg.com/cornerstone-tools/-/cornerstone-tools-3.15.1.tgz#9c14a0dde32d8d8cc60e1abf3c222b681964fb9d"
+  integrity sha512-nD9M6cbcQJoU5XYUfbrHyi8lt9SD32pQFJ87PfIVRgMvJQA3awobcWwnXZJAD7lB7xPvO1n763FzeuQ5CqWcpQ==
   dependencies:
     "@babel/runtime" "7.1.2"
     cornerstone-math "0.1.7"