Quantity box on same row, HH misplaces and {date_ymd} not working.

It looks to me like the quantity field is already placed behind the "Antal"

screenshot: http://bit.ly/SfqohZ

your theme css file: http://www.nybroe.se/wp-content/uploads/headway/cache/general-89d6eba.css?ver=3.4.1 on line 1 has the following rule.

[css]
input[type="text"], input[type="password"], input[type="email"], textarea, select {
    -moz-box-sizing: border-box;
    background: none repeat scroll 0 0 #FFFFFF;
    border: 1px solid #CCCCCC;
    border-radius: 2px 2px 2px 2px;
    color: #777777;
    display: block;
    outline: medium none;
    padding: 6px 4px;
}

the "display:block" property being added to the input is causing the hours field and colon to be displayed incorrectly. If you remove that property, you'll see that it formats correctly.

screenshot: http://bit.ly/Sfp4M4

Next, the empty line above the price is the description field with a non-breaking space in it. If you're not using the description, then you can add the following CSS rule to the end of your theme stylesheet and it will hide the description field all together.

[css]
body .gform_wrapper ul li.gfield_price div.gfield_description {
	display: none
}

screenshot: http://bit.ly/PvkTz4

We will have to test the email formatting thing and get back to you.. this should cover your other requests though.