LPS-41962

Hey Samuel,

I'm sending this pull to you because I'm not sure that we are doing the right escapes (not only in this plugin but in the portlet).

I didn a quick search in the portal (search by Liferay.Util.openWindow in *.jsp*) and I found that there are many different patterns. 

In some places they are using LanguageUtil and in other UnicodeLanguageUtil (according to LPS-23627 it seems that the latest one is the right one)

Same happens with HtmlUtil.escape, HtmlUtil.escapeURL or HtmlUtil.escapeJs. All of them are being used for escaping URLs and I guess that we should unify it.

Let me know what you think.

Thanks!