Relax toolbar combobox and button sizes
Remove unused make_sized_button function and buttonSize variable
Use and install PNG icons instead of ICO, rename P-face to pronterface
 * PNG icons are smaller and there is no advantage in ICO files containing only one resolution
 * It's coomon to name the icon after the app
Merge pull request #502 from hroncok/pngicons

Use and install PNG icons instead of ICO, rename P-face to pronterface
Fix #497: switch to FloatSpin for extrude length/speed
Merge pull request #490 from nullie/fix-combobox-size

Fix combobox size
Add length/speed labels to extrusion controls
Add parameter for 3D view background color (#481)
Don't crash if unable to read Slic3r configuration
Remove prontserve and update README accordingly (#464)
Import release scripts for Windows from Kliment
Merge branch 'master' of github.com:kliment/Printrun
Fix GLException in non-light model
Remove "Check temp" button

This button is almost useless, takes space, can be easily replaced by a
custom button if really needed.
Add spacers to main toolbar to group buttons

(also expand toolbar in compact/standard modes)
Remove duplicated settings (there are already in pronsole)
Make monitor setting visible in Settings dialog
Remove "Monitor" checkbox from controls and expand temp graph

This option is available in the Settings panel and is not likely to
change often, so we can use the free space there for other means.
Add buttons to hide controls/log panels
Whitespace