Revert "redesigned properties : readable keys, uniform construction order, French with UTF-8 encoding"

This reverts commit 27043cc89751f9d900b7f767b6001d5703ca7fdd.
Change the BASE_PATH key.
Encode "/" into "%2F" for the branch name to avoid a bad request
Error during logging if the alert is null.
i10n update
Merge branch 'master' into deprecated

Conflicts:
	src/main/java/pl/touk/sonar/GerritDecorator.java