#389 Warn moderators about new/pseudonymous Contents authors

[Ahasuerus]

If the Contents section of a New Pub, Edit Pub or Clone Pub submission contains new and/or "known pseudonym" authors, the approving moderator should see a yellow warning similar to the warning that is displayed for new/pseudonymous pub-wide authors/artists.

[Ahasuerus]

Fixed spelling.

[Ahasuerus]

NewPub implemented in:

common/library.py 1.62
common/viewers.py 1.56

Installed in r2014-252 on 2014-08-22. ClonePub still needs to be modified.

[Ahasuerus]

Part 2 - Fix a Python bug with multiple cover artists and make the plus sign look the same as all other plus signs in Edit Pub. Implemented in:

common/library.py 1.63
common/viewers.py 1.57

Installed in r2014-253 on 2014-08-22.

[Ahasuerus]

Part 3: Applied the same changes to ClonePub and Import/Export Content in common/viewers.py 1.58. Installed in r2014-254 on 2014-08-22.

[Ahasuerus]

Step 4: Applied the same changes to EditPub in common/viewers.py 1.59. Installed in r2014-255 on 2014-08-22. Closing.