STS-3941 - Can't disable Gradle from STS
only enable gradle menu when the gradle nature is present
Updated the icon with transparent background.
GradleSaveParticipant broke, fix it.
Merge branch 'master' of github.com:spring-projects/eclipse-integration-gradle
Fix NPE on deleted project
OpenClose listener to 'quick refresh' remapped jar/projects
Move jar remapping options from project to global preferences
Merge pull request #54 from a1dutch/disable-menu-no-nature

only enable gradle menu when the gradle nature is present
Regression test for jar-remap-gradle open-close listener
Merge branch 'master' of github.com:spring-projects/eclipse-integration-gradle
Very basic functionality working using StsEclipseProject
Added custom tooling api to project
Initial implementation of public/internal tasks visibility support
Added full hierarchy to StsEclipseProject, improved tests, improved build scripts
Converted plugin to Java, cut down on number of dependencies
Update README.md
Cache the job fetching the model such that no new jobs scheduled.
Update README.md
Added gradle repo to init.gradle, consistency in Collection type in StsEclipseProject