Merge pull request #350 from uberspot/master

add lock icon for 'Encrypt to..' multiselect option
Update to gradle 0.9+ jar
Update gradlewrapper to gradle 1.11
Add new gradle-wrapper.jar
Switch from 0.9+ to 0.9.0
Update missing build.gradle files
Update README
Merge pull request #353 from Emantor/new_gradle

New gradle and gradle plugin Version
Multiselect: Create 'select all' in public and secret keylist