Interfaces for Adding Email Events and Editing their Translations

If you ever had to add your own email event, you should know how painful and
unclear is this process. You should add record to Events table, filling
fields with values that you have to detect by looking into different places
in code, database and administrative console interface. Then you proceed
with opening every installed language, switching to Email Events tab,
finding your event and entering content for it. It may sound not very
complicated, but it takes a lot of time to deal with.

Another instance is editing different email event translations at once. If
you are site administrator, and, for example, you decide to add user
password to emails that are sent after user registration, you have to edit
all email event translations via opening every language, or at special
E-mails section. But commonly site administrator wants to make analogic
changes to emails, so it would be nice to edit all these translations on one
single page.

So, I made the patch that adds E-mail Events section under Configuration ->
Website. In section, you can find a grid and form - for adding and editing
email event and it's translations - and all in one single edit form. Fields
value options are present, so you don't need to search code to get to know
what exact field value means. Also you can manage tag replacements there.
SQL file attached contains phrase translations for new added section. Patch
also contains few minor issue fixes.