arjan/mod_rsc_name — pull request #2 by ddeboer (2014-09-24 16:02:44+00:00)
Title: Do nothing when resource has no title

This fixes:

```
warning @ controller_websocket:142
throw:{badarg,[{erlang,iolist_to_binary,[[undefined," ",[]]],[]},
{mod_rsc_name,calculate_name,4,
[{file,"priv/modules/mod_rsc_name/mod_rsc_name.erl"},
{line,59}]},
{mod_rsc_name,observe_rsc_update,3,
[{file,"priv/modules/mod_rsc_name/mod_rsc_name.erl"},
{line,40}]},
{m_rsc_update,'-update/4-fun-1-',7,
[{file,"src/models/m_rsc_update.erl"},
{line,273}]},
{z_db,transaction,3,
[{file,"src/dbdrivers/postgresql/z_db.erl"},{line,83}]},
{m_rsc_update,update,4,
[{file,"src/models/m_rsc_update.erl"},
{line,306}]},
{mod_oembed,preview_create,3,
[{file,"modules/mod_oembed/mod_oembed.erl"},
{line,326}]},
{mod_oembed,observe_rsc_update,3,
[{file,"modules/mod_oembed/mod_oembed.erl"},
{line,79}]}]}
```