Cw 763 contact form

- fix database bug
- change the mail subject

The HTML message body will be the followwing (to be inserted in mainstrat contact form settings):

"<table style="width: 100%;" border="1"><tbody><tr><td>Full name:</td><td>[name]</td></tr><tr><td>E-mail:</td><td>[email]</td></tr><tr><td>Topic:</td><td>[topic]</td></tr><tr><td>Type of sender:</td><td>[sender]</td></tr><tr><td>Country:</td><td>[country]</td></tr><tr><td>Selected language:</td><td>[language]</td></tr></tbody></table><p><strong>Message:</strong></p><p>[message]</p>"