Configuration via query parameter

[imhoffd]

When the URL is rewritten due to html5 routing, and a reload occurs, the configuration from query parameters is lost. We need to somehow persist configuration, perhaps using sessionStorage.

This will resolve these CLI issues: ionic-team/ionic-cli#3296 (also ionic-team/ionic-cli#3069)

Should also resolve #14742

[ionitron-bot]

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