Revert "[BUILD][E] changes SWT library location for IntelliJ"
[REFACTOR] moves NullProxyResolver class
[BUILD][E] changes SWT library location for IntelliJ
[REFACTOR] renames NullChecksumCacheImpl
[INTERNAL][S] adds missing context components
[INTERNAL][I] adds checks to IContainer#getFile/Folder impl
[API][I] adds IFile#delete and IFolder#delete implementation
[API][I] implements IFolder#create