[gui-test] revert pre_tests_in_community.gant back
[gui-test] revert pre_tests_in_community.gant back

Revert pre_tests_in_community.gant script back to perform a custom shell script before running Ant tasks. Restored from commit 33f706e8

allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community,allotria/intellij-community