Added support to upload/download symbolic links

.classpath

docs/unimelb-mf-check.md

docs/unimelb-mf-download.md

docs/unimelb-mf-upload.md

pom.xml

src/main/java/unimelb/mf/client/sync/MFSyncApp.java

src/main/java/unimelb/mf/client/sync/check/AssetItem.java

src/main/java/unimelb/mf/client/sync/cli/MFCheck.java

src/main/java/unimelb/mf/client/sync/cli/MFDownload.java

src/main/java/unimelb/mf/client/sync/cli/MFUpload.java

src/main/java/unimelb/mf/client/sync/settings/Settings.java

...n/java/unimelb/mf/client/sync/task/AssetDownloadTask.java

...imelb/mf/client/sync/task/AssetNamespaceDownloadTask.java

...n/java/unimelb/mf/client/sync/task/AssetSetCheckTask.java

...ava/unimelb/mf/client/sync/task/AssetSetDownloadTask.java

...in/java/unimelb/mf/client/sync/task/FileSetCheckTask.java

...n/java/unimelb/mf/client/sync/task/FileSetUploadTask.java

...n/java/unimelb/mf/client/sync/task/SymlinkUploadTask.java

...n/java/unimelb/mf/client/terminal/command/GetCommand.java

src/main/java/unimelb/mf/model/asset/SymlinkAsset.java