IFramePanel implemenation

[spdavid]

Q	A
Bug fix?	[ ]
New feature?	[X ]
New sample?	[ ]
Related issues?	fixes #X, partially #Y, mentioned in #Z

What's in this Pull Request?

New Implemenation of an IFramePanel control Similar to the IFrameDialog except renders an IFrame in a Fabric UI Panel. Did not open a discussion for this but I needed to build it anyway. Add it if everyone feels its a good idea.

Has a nice dynamic height if the height is not set. Tested in IE, Chrome, Edge.

[AJIXuMuK]

HI @spdavid!
Could you please check the error from CircleCI:

[21:47:50] Error - [webpack] 'dist':
./lib/controls/iFramePanel/IFramePanel.js
Module not found: Error: Can't resolve './IframePanelContent' in '/home/circleci/sp-dev-fx-controls-react/lib/controls/iFramePanel'
resolve './IframePanelContent' in '/home/circleci/sp-dev-fx-controls-react/lib/controls/iFramePanel'
  using description file: /home/circleci/sp-dev-fx-controls-react/package.json (relative path: ./lib/controls/iFramePanel)
    Field 'browser' doesn't contain a valid alias configuration
  after using description file: /home/circleci/sp-dev-fx-controls-react/package.json (relative path: ./lib/controls/iFramePanel)
    using description file: /home/circleci/sp-dev-fx-controls-react/package.json (relative path: ./lib/controls/iFramePanel/IframePanelContent)
      no extension
        Field 'browser' doesn't contain a valid alias configuration
        /home/circleci/sp-dev-fx-controls-react/lib/controls/iFramePanel/IframePanelContent doesn't exist
      .js
        Field 'browser' doesn't contain a valid alias configuration
        /home/circleci/sp-dev-fx-controls-react/lib/controls/iFramePanel/IframePanelContent.js doesn't exist
      .json
        Field 'browser' doesn't contain a valid alias configuration
        /home/circleci/sp-dev-fx-controls-react/lib/controls/iFramePanel/IframePanelContent.json doesn't exist
      as directory
        /home/circleci/sp-dev-fx-controls-react/lib/controls/iFramePanel/IframePanelContent doesn't exist

[codecov-io]

Codecov Report

Merging #226 into dev will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##              dev     #226   +/-   ##
=======================================
  Coverage   72.71%   72.71%           
=======================================
  Files          16       16           
  Lines         744      744           
  Branches      138      148   +10     
=======================================
  Hits          541      541           
  Misses        159      159           
  Partials       44       44

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[spdavid]

@AJIXuMuK All checks now passed.

[estruyf]

Thanks @spdavid, I did some code changes to the control for consistency, but also for retrieving the parent element by the className. Control has been merged and will be available in v1.12.0.