Fixes to French translation
Removed extra error_reporting setting
Corrected redirection URLs
UI updates and other improvements

Changed the UI to allow for searching of users, while still retaining
old functionality.  Added confirmation table so the user using the
plugin can see the users they are merging, as well as final warning.
Also updated database supported functionality as not all MySQL database
engines support transactions.  Finally added configuration option to
make it optional to suspend the user.
adding support for complex quiz attempt structure

Quiz attempts are another complex compound index.  When both users
merging have attempted the same quiz, instead of deleting the old one’s
records we want to preserve the data.

This update also adds in the ability to add custom processing for any
compoundIndex instead of just deleting the old user’s data.
changes related to jordi's comments

Updates and code refinements based upon Jordi’s suggestions
fixing code issues

Forgot to change these to “||” :)  This should do it
moodle-tool_mergeusers - WIP: revisiting contribution code

    * Removed unnecessary translation strings. Replaced by Moodle core strings.
    * Translated strings to Catalan and Spanish.
    * Add a new settings option to enable merging only when transactions are allowed (but not used yet).
    * Moved the "Save selection" button at the bottom of the box for conformance among Moodle specifications.
moodle-tool_mergeusers - WIP: remove description box, since it appears as a help icon in the form.