ST: added git ignore for intellij project files.
ST: added git ignore for intellij project files.

aldreth/web-toolkit,image-tester/web-toolkit,aldreth/web-toolkit,skyglobal/web-toolkit,image-tester/web-toolkit,image-tester/web-toolkit,skyglobal/web-toolkit,aldreth/web-toolkit,skyglobal/web-toolkit