Fixes home screen banner issue

[sonusourav]

Fixes #911

Changes: Used different kiwix logo design to make up for the space in landscape orientation but the main design is kept intact.

Screenshots/GIF for the change:

[rashiq]

There is absolutely no need to add all these resources. Android can downscale images on lower end devices. Remove all the lower resolution images please. That's like a couple of megabytes.

[sonusourav]

@rashiq @soloturn I had put them because they were there before also. But still if you want I would remove them. Could you please be a bit more clear that out of the following dimensions which one to keep:

1. hdpi
2. mdpi
3. xhdpi
4. xxhdpi
5. xxxhdpi

[sonusourav]

@abdulwd Could you please review this?

[abdulwd]

@sonusourav Please rebase and squash the commits.

[sonusourav]

@abdulwd I have rebased and squashed. Could you please review?

[abdulwd]

There is a white boundary around the Kiwix logo in the landscape mode which is not there in the portrait mode. I think you can fix that easily.

[mhutti1]

Could you explain why the extra resources are necessary?

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be now be reviewed manually. Thank you for your contributions.

[kelson42]

@sonusourav We would like to carry on with this PR finally. Would you consider to answer @mhutti1 to finish the PR reviewing process?

[stale]

This pull request has been automatically marked as stale because it has not had recent activity. It will be now be reviewed manually. Thank you for your contributions.

[kelson42]

No feedback. Closing the PR.