Event log access from MegaStatus menu

[Lupum1001]

This PR is based on the following discussion/request: #2128

it enables the dropdown menu for MegaStatus, and adds a link to the event log, just like in the Home activity.

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***UPDATE: I've removed the following refactoring part and put it in its own PR: #2293

I also did a bit of refactoring in Home.java->onOptionsItemSelected(), based on the following linting advice:

I got rid of the initial switch-case and converted everything into one big if-else-if statement.

[tolot27]

Currently, we cannot upgrade the AGP because of the wrong casing of package names (#1522) and it is unlikely that this will change in the near future because we had to modify a lot of classes (#1539).
Hence, I would separate this into another PR which could contain all fixes for this lint waring.

[Lupum1001]

Hence, I would separate this into another PR which could contain all fixes for this lint waring.

I figured I might as well change it while I was already there, but there are some efficiency improvements in there as well.

• item.getItemId() only really needs to be called once
• if an 'if' statement evaluates as true, the use of else-ifs prevents the subsequent checks from having to run anyway.

In theory, I actually prefer a switch-case for the whole function (replacing the 'if' statements), because I feel it's cleaner syntax when you're just checking the id against a bunch of different options. I figured it was better to go with the future-proof format though.

[jamorham]

If they're going to be fussy about resource id's (and I don't know why the integer can't be used in a switch statement) then wouldn't it be better just to use the onClick xml parmeter instead as this is closer to the databinding ui method which is used in later parts of the code anyway and is less susceptible to merge conflicts than an if/else chain? (I also like this because you can call it with null and use the utility of that menu item to trigger programatically)

[Lupum1001]

Ok, I've moved the refactoring out of this PR; it just includes the new menu item now.

PR with the refactoring coming momentarily.