Fresh install of ScriptRepository is broken

[martyngigg]

To reproduce:

• Remove anything referencing the script repo so that we can start clean;
• Click File->Script Repository and then click okay
• Click on something to download it, e.g. the muon folder
• the results log shows an error: 'IndentationError: unexpected indent (<Interface>, line 2)'

I have noticed that the exact same error occurs when you go to View->Preferences->Mantid->Directories and then try to add a directory to the python scripts path. When you click apply you get the above error

[martyngigg]

This issue was originally trac ticket 8861