Public Event Page: Add menu tab "Sponsors"

[mariobehling]

If an organizer has activated "Sponsors" in the event creation wizard and added sponsors, please show a tab "Sponsors" on the left hand-side of the public page.

1. Implement the sponsors menu tab above the menu item "Organizers".
2. Change the heading of the "Sponsors" section to match the heading level and style of "Organizers".

[mariobehling]

We now have "Supported By" and "Sponsors". Only need "Supported By"

[aneessh18]

can I look into this issue?

[snitin315]

Yes

[aneessh18]

@snitin315 can you review it and give feedback? Just need some help on why tests failing. All I did was, searched the file which was printing Sponsors, and omitted it.
This is the error message that is being shown.
Error: Browser exited unexpectedlyNon-zero exit code: 1[8156:8156:0829/225513.944323:ERROR:zygote_host_impl_linux.cc(90)] Running as root without --no-sandbox is not supported. See https://crbug.com/638180.

googled it but did not find anything. Any help is appreciated.

[mariobehling]

Still need to remove the sponsor heading.