LB-545: Embed URL crashes if a user who has published posts is deleted
* some initial overwriting
Merge branch 'devel' into lb-545-user-retirement
LB-545: Embed URL crashes if a user who has published posts is deleted
* adjusting
LB-545: Embed URL crashes if a user who has published posts is deleted
* deletion set as inactivation
LB-802: application.py execution fails
* fixed in the superdesk part
Merge pull request #245 from msat-cont/lb-802-debug-execution

LB-802: application.py execution fails
LB-545: Embed URL crashes if a user who has published posts is deleted
* adjusted
Merge remote-tracking branch 'sourcefabric/devel' into liveblog-15
Builded themes.

For production mode.
Merge pull request #248 from nistormihai/liveblog-15

Builded themes.
LB-841: After a chained blog was on autopublish mode it can't be deselected as chained blog
* fixed
Merge branch 'liveblog-15' into lb-545-user-retirement
LB-545: Embed URL crashes if a user who has published posts is deleted
* adjusted
Merge pull request #249 from msat-cont/lb-841-deselect-on-off-auto-pub-chained

LB-841: After a chained blog was on autopublish mode it can't be deselected as chained blog
LB-545: Embed URL crashes if a user who has published posts is deleted
* adjusted the upgrade script
Builded themes
Merge pull request #253 from nistormihai/liveblog-15

Builded themes
LB-758: Configure Blog -> User Comments -> Switching between states has problems on Saving

Reset events on config. Fix blogUrl in comments tab. Save comments
settings on save and close (was only in save button handler).
Merge pull request #254 from petrjasek/lb-758-config-blog-error

Lb 758 config blog error
LB-843: When chained blog source is shown one of chained blogs should be selected

Fixed.