When connected from vnc the screen did not unlock from the remote session click
This also implements an optional disable DPMS for people with issues where DPMS doesn't work as it should (hw issues, driver issues, etc)
Changes #340 almost entirely
* Graph in temp panel, combine preheat and temp
* Fix target not working properly
* Fix initial preselect
* Add the ability to change in delta temps
* Make the label translatable
* Add Unit to the label
* Add de/select button to popover
* Warn the user if nothing was selected
* Fix templabel
* Fix to comply with pep8
* Fix colors, thanks Jordan
* Fix popover selection
* Update docs image
* Gain horizontal space
* Gain even more horizontal space (remove target)
* Fix temperature_fan
* Add icon and style to temperature_fan
* List preheat deprecation in breaking changes
* Use the printer maximum temperature
* Cleanup target and fix popover select
* Fix codestyle
* Add extra preheat presets
* Change Class name
* Update docs image
* Improve Maximum temperature handling and Temperature fans
* Use a base CSS for styles
* Fix updater dialogs too close to buttons and updater too close to the edge
* Fix blurry Dropdown and dialog buttons
* minor tweaks and fixes
* Solarized restyle
* more vertical clearance between items
* workaround colorized bar at high res.
* colorized pressed state