ui: general - check cross-browser compatibility

[catlabs]

I'm submitting a...

[ ] Regression (a behavior that used to work and stopped working in a new release)
[x] Bug report  
[ ] Feature request
[ ] Documentation issue or request
[ ] Support request => Please do not submit support request here, instead see https://github.com/NationalBankBelgium/stark/blob/master/CONTRIBUTING.md#got-a-question-or-problem

Current behavior

I have checked briefly on internet explorer, doesn't look bad but some adjustments should be done.

Expected behavior

Check the showcase on different browsers if the app is correctly displayed.

[christophercr]

Some issues found so far:

On Internet Explorer:

Message Pane demo page

And on mobile:

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Headings in most of the pages

which is most likely related to this error in the console:

CSS3114: @font-face failed OpenType embedding permission check. Permission must be Installable.
Q4VhAPMA0GCSqGSIb3DQEBAQUABIGAHcF3ia6bbyLja+VF2k6RQPCf7zsfJ0pWrDr9qJRqfPecwX97k2BOG8QrV5WUyxbhmmcz0SspE8jsvrxZsQOkKZnsHYiZJId3D5vKFPvU1ElMdA7IPS5vIMkDzejlD9AhObNWGdX7rL2sqTi9sNUMo9ljrbCVtGhYw+LXKf+RpMcAAA==

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DatePicker
The last days of the month bleed out of the picker (I think this happens in Chrome as well):

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Table

When showing the Global filter or any Column filter in the Table:

This error is thrown:

"TypeError: Unable to get property 'opacity' of undefined or null reference
   at e.prototype.computeStyle (http://localhost:8080/vendor.049f5eec4befc883d9cb.chunk.js:1:3732201)
   at Anonymous function (http://localhost:8080/vendor.049f5eec4befc883d9cb.chunk.js:1:3723983)
   at forEach (http://localhost:8080/vendor.049f5eec4befc883d9cb.chunk.js:1:215009)
   at Anonymous function (http://localhost:8080/vendor.049f5eec4befc883d9cb.chunk.js:1:3723961)
   at forEach (http://localhost:8080/vendor.049f5eec4befc883d9cb.chunk.js:1:215009)
   at Ze (http://localhost:8080/vendor.049f5eec4befc883d9cb.chunk.js:1:3723928)
   at e.prototype._flushAnimations (http://localhost:8080/vendor.049f5eec4befc883d9cb.chunk.js:1:3717275)
   at e.prototype.flush (http://localhost:8080/vendor.049f5eec4befc883d9cb.chunk.js:1:3713800)
   at e.prototype.flush (http://localhost:8080/vendor.049f5eec4befc883d9cb.chunk.js:1:3726324)
   at Anonymous function (http://localhost:8080/vendor.049f5eec4befc883d9cb.chunk.js:1:825282)"

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Menu on mobile
The Stark icon is not centered:

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Minimap demo page
The minimap popup div is rendered in the wrong position on mobile (I think this happens in Chrome as well):

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Header
When scrolling with the mouse in any page, the header does an strange flickering. It doesn't happen if the scroll is done by dragging the scroll bar.

[carlo-nomes]

dropdown schrinks in IE11