Revert "Other preparations for WebView"

This reverts commit 3c13728abf6ab7690262ef0d7ce3db124805d3a7.
Revert "Internet Explorer will no-longer be used. Preparing to use
JavaFX WebView (WebKit)."

This reverts commit 4bb91e05250e99dee97f8cd5ec3b5e9f548d5d3a.