Need to be able to get SVN password from the UI

[David Coles]

Since we tutors require access to students SVN repositories for marking, we need a way to give them their SVN hash from the UI.

At the moment the IVLE tour recommends entering the following into a console:

import ivle.config
ivle.config.Config()['user_info']['svn_pass']

While this works, it's just a bit ugly. We have this pretty UI for getting submissions and have to get people to use a magic incantation in the console. Surely this can be improved.

[Matt Giuca (mgiuca)]

1. Display the SVN password in the user settings page (as an immutable field). Potentially even allow users to modify their svn password.
2. On the lecturer submissions view (which gives lecturers the svn co command), display the lecturer's SVN credentials on that page. This would avoid having to get it out of the console.

These are both extremely easy and should be implemented for 1.0.1.

[Matt Giuca (mgiuca)]

In (1) above, also display the user's SVN URL, so they can check out their personal repository in an external client.

[Matt Giuca (mgiuca)]

This is a bit of a security risk (for the same reason we typically show ***s in password fields). We don't want someone happening to look over someone else's shoulder and getting their SVN password.

Only show it on the user page (the lecturer submissions page should have a link to that page). And make it display: hidden with a Javascript clicky top open it up.

Thoughts? I'm still concerned that it lets someone who randomly accesses someone's account to get the svn password. For even better security, we should potentially have a separate form where we ask them to enter their IVLE password before displaying the svn password.

[Matt Giuca (mgiuca)]

Fixed in trunk r1782 and r1785. Additional documentation in subsequent commits.