add more configuration options for navigation

- options (passed directly to the MenuItem)
- uri (as alternative to route)
feat #2 add more configuration options for navigation (sstok)

This PR was merged into the master branch.

Discussion
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|Q            |A  |
|---          |---|
|Bug Fix      |yes|
|New Feature  |yes|
|Deprecations |no |
|Fixed Tickets|   |
|License      |MIT|

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Commits
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92424e28f52176f68cb4cf1165e8bc913b04bb80 add more configuration options for navigation

- options (passed directly to the MenuItem)
- uri (as alternative to route) (sstok)
update .gush.yml