Core: make compiling with flto optional
updated todo
Merge branch 'master' of https://github.com/frans-fuerst/zeitmaschine
Merge branch 'master' of https://github.com/frans-fuerst/zeitmaschine
Merge branch 'master' of https://github.com/frans-fuerst/zeitmaschine

Conflicts:
	src/DOC-zeitmaschine.asciidoc.txt
Android: change app name and icon