Add new article metrics plugin to plugins.xml

[indakabarody]

No description provided.

[asmecher]

Thanks, @indakabarody! @bozana, would you mind reviewing this plugin?

[bozana]

Hi @indakabarody

I took a look at the plugin and would have a few comments:

1. You are using these icons in the smarty template file:
   https://i.ibb.co.com/4sq7yLG/ico2.png
   https://i.ibb.co.com/8zQW6X2/ico3.png
   https://ia-education.com/journal/public/site/icon-doi.png.
   We would recommend to use SVG icons. Maybe this site is helpful to search and find adequate SVG icons: https://www.svgrepo.com/ ?
   Also, it would be good to have/provide the icons within the plugin, and not to link to them via URLs.

2. You use a PDF icon for Downloads, but the galleys could also be in a different format, e.g. HTML, so a more generic icon would probably better fit for that, I think.

3. There are some hard coded words in your smarty template -- for example "views" and "Downloads". I will suggest to put them into the locale.po file, so that they can be translated and have properly meaning in different languages.

4. It would be good to use _doiURLEncode function (you can find the function in the DOIPubIdPlugin.php) when displaying the DOI.

5. There are two functions that are not used by the plugin. They can be removed.

6. The certification type can be "reviewed" in your PR for the plugin_gallery.

I also think that the plugin name is a little bit too generic -- one could think that the plugin calculates some article metrics, for example -- but I still have no good suggestion for another name :-)

Thanks a lot!