Refactor: compute WeekView width dinamically

[pdpino]

Main changes:

• Remove hard-coded CONTAINER_WIDTH variable
• Calculate dynamically dimensions = { dayWidth, pageWidth, timeLabelsWidth } to define the widths of the views

This refactor will allow solving later:

• issues Select number of days scrolled #128, Selected Date Position. #185, and goToNextDay & goToPreviousDay #186 (already solved in upcoming PRs)
• responsiveness (It is not responsive to orientation change. #38, alignment issue during scrolling #142) (in the future)

[hoangnm]

So is this PR a baseline for the later improvements, @pdpino ?

[pdpino]

So is this PR a baseline for the later improvements

Yes @hoangnm

[hoangnm]

Thank @pdpino , it looks promising!

[rdewolff]

I have noticed the component is not displayed properly on a browser when using react-native-web. Have you checked it?

[pdpino]

@rdewolff We haven't checked in react-native-web.

Could you open a different issue with this, and show a screenshot or video with the error?

[rdewolff]

Will do!