FFmpeg execution: \n -convert image to video \n -concatenate videos
Delete ffmpeg

Unwanted file
Interface improvements
- Play list sequence reorganisable
- Video and Image element removable
- Improved image and folder chooser
- Other minor interface modification
Commit fix (Last commit was incomplete)
New add element window
Fix conflicts after ffmpeg merge:
	pom.xml
	src/main/java/ui/LocalizedText.java
	src/main/java/ui/settings/SettingsWindow.java
First draft for location autocompletion
UI addons
Weather location search
Merge fix