Replace path delimiter with File.separator

[bryantaustin13]

Describe the bug
Throughout the project "/" is used as a delimiter for file paths. This is OS specific. The "/" is for Linux/Mac and the "" is for Windows. We need to replace the delimiter with File.separator which is not OS specific. I replaced it in BundleResources.java. We need to be careful to differentiate between url paths and file paths.

To Reproduce
Search the java files for "/"

Expected behavior
File paths will work regardless of the OS.

[c-schuler]

Fix for this has been merged into the operation-overhaul branch - close when that branch is merged into master