This is a first commit in order to close#588.
- Removed the names from the translation files.
- The dropdown menu will now filled with the names of the gateways in
the Txtmsg folder.
- Changed Mollie to the proper company name: Messagebird.
- Everybody that was using Mollie will on upgrade automatically change
to Messagebird (replace old name in DB with new name).
- Updated: Clickatell, Twilio, Spryng, Textmarketer and Messagebird
(Mollie).
login screen: changing h2 to h3 and large buttons to medium;
tooltip: show on hover instead of focus;
changing styling of flashmessage (removing status text, adding icon, changing width);
changing shortcodes from info to success for some actions;
changing all php file permissions to 0644;