Release version 0.5.3

- Added changelog history
- Enabled changing of Mount and Startup
options also when virtualbox is running - They impact only during plugin
start
- Only if VirtualBox installed give option to update from local or
online versions if exist otherwise download options
- Changed
"vboxmanage" to correct case "VBoxManage" and added full path
"/opt/Virtualbox/VBoxManage"
- Added to log confirmation that
installation of packages completed correctly.
- If "VirtualBox LOCAL
version different than INSTALLED version" then function changed to
"update" instead of "install"
- Duplicated all "logger" output also to
regular output "echo"
- Added --timeout=60 on all wget commands
- Minor
UI Change