New upstream release (LP: #796629): * Fix timeout in sleep_test script (LP: #665299) * Fix traces in hyper_text_view module (LP: #796508) * Added camera test (LP: #764222) * Fix GUI definition file so main window uses "natural request", growing when child widgets require so (LP: #776734) * Fix open/read blocking behavior and backend/frontend communications to avoid hangs and lingering backends. (LP: #588539) * Render header text dynamically over the image background, and updated pot file with the new string. (LP: #621880) * Improve command line key prompts (LP: #786924)