Better file upload etc., needs firmware 059b-dc42

Improved file upload speed
Removed limit on maximum line length in uploaded files
When uploading web files, upload .js files to js folder and .css files
to css folder
Changed delete buttons in SD card file list to work in FireFox as well
as Chrome
Increased max temperature in chart to 280C
Removed direct web print facility
Partial fix for when filenames are too long

Partial fix for when filenames are too long to fit in the boxes in the
SD card listing
Got new file upload protocol working
Use HTML 5 progress bar etc.

Use the HTML 5 progress bar to show progress because the home-made one
wasn't updating properly when the file upload speed was increased. Show
the size of the uploaded file.
Changes for firmware 059c-dc42

Changes for new upload protocol supported by 059c firmware