[JBIDE-15597] added IApplication#removeEnvironmentVariable
Merge pull request #92 from adietish/JBIDE-15598

Merged by openshift-bot
[JBIDE-15598] show all environment variables
[JBIDE-15598] added test to assert env var reload on app#refresh
Merge pull request #93 from adietish/JBIDE-15598

Merged by openshift-bot
[JBIDE-15598] corrected tests to delete vars before manipulating them
Merge pull request #94 from adietish/JBIDE-15598

Merged by openshift-bot