Merge branch 'dev'
Merge branch 'dev'
* refactored build script; versions are now stored in build.properties so build.gradle doesn't have to be touched anymore
* updated README.md
* modified build script to add a task to copy the generated jar file into the root dir to include it in commits
Merge branch 'master' into dev
* implemented backup consolidation; allows to set a maximum number of backups for each save/world

+ added additional configuration options
* implemented interval backups; disabled by default, can be enabled via config