Made some changes to ComicInfo metadata

[Shamicen]

I made some changes to ComicInfo metadata generation:

The web field had a schema change and can now contain multiple space separated reference website links. Therefore ComicInfo metadata will from now on include the source URL and all available tracker URLs.
For more information look at this issue anansi-project/comicinfo#56 and this PR anansi-project/comicinfo#57

I changed the translator field to use the source name if no scanlator name is available.

[AntsyLich]

I changed the translator field to use the source name if no scanlator name is available.

Not sure i like that change

[Shamicen]

I was planning to make it so that LocalSource chapters will appear with their metadata in the future.

As of now we would be unable to display a scanlator for most sources, because a lot of them don't populate the scanlator field with their name if they are also the scanlators.

Their are also a few aggregator sources that already "incorrectly" populate the scanlator field with their source name.

For use inside Mihon the field will only show up in LocalSource and even if the source wasn't the original scanlator seeing which source the manga is from looks better / gives the user more information then just leaving it blank.

We could make it standard policy for sources that are also scanlators to populate the scanlator field with their source name and for sources that aren't to not populate it, if we don't want to risk "wrong" translator names. Whether or not the 3rd party extension will actually follow it is a different question but it can't hurt to try.

We could alternatively create another non schema field and use this for our LocalSource when no scanlator is available.

Tell me what you think and I'll make the necessary changes.

[AntsyLich]

Could do a custom field then for source and in local source do scanlator ?: mihon_source

[Shamicen]

Could do a custom field then for source

I implemented it