Merge pull request #84 from aenario/master

Icon's caching
Merge pull request #86 from aenario/master

fix icon when manually stopping application
Merge pull request #87 from aenario/master

fix when autostop
Merge pull request #88 from aenario/master

cleaner icons for stopped apps
stop apps after 15 minutes of inactivity
Merge pull request #89 from poupotte/master

Stop apps after 15 minutes of inactivity
debug tests
Merge pull request #90 from poupotte/master

Debug tests
style improvement
change "installing" label color