LB-856: The DB-upgrade causes errors if SQLite3 engine is used
* calmed
LB-855: Delete the population of root user
* root user not populated
LB-863: After a blog is closed it should disappear from Live Blog menu
* isOpen filter parameter for blogs
LB-860: On Manage Collaborators -> add new collaborators, it is showed only first 20 collaborators.
* limit-filter added
Merge pull request #275 from nidzix/liveblog-15

Transfer Ally-Py/pull/64 to liveblog15
LB-878: In the case of link and image post types after a post is added the custom link/image edit form is not showed

Call changetype on save to reload the selected type form.
Merge pull request #277 from petrjasek/lb-878-form-type-change

Lb 878 form type change
LB-545: Embed URL crashes if a user who has published posts is deleted
* db upgrade adjusted
Merge pull request #278 from msat-cont/lb-545-user-retirement

LB-545: user retirement
Merge pull request #270 from msat-cont/lb-863-filter-closed-blogs

LB-863: filter closed blogs
Merge branch 'liveblog-15' into lb-860-limits-for-collab-list

Conflicts:
	plugins/livedesk/livedesk/impl/blog_collaborator.py
LB-863: After a blog is closed it should disappear from Live Blog menu

Filter closed blogs from live blogs submenu.
Merge pull request #271 from msat-cont/lb-860-limits-for-collab-list

LB-860: limits for collab list
Merge pull request #262 from msat-cont/lb-855-root-not-wanted

LB-855: root not wanted
LB-856: The DB-upgrade causes errors if SQLite3 engine is used
* try blocks adjusted
Merge pull request #260 from msat-cont/lb-856-calm-db-upgrade-under-sqlite

LB-856: calm db upgrade under sqlite
Merge pull request #279 from petrjasek/lb-863-filter-closed-blogs

LB-863: After a blog is closed it should disappear from Live Blog menu
LB-895: Facebook source is not showing the login with facebook button
* outer-joining fixed
Merge branch 'liveblog-15' into lb-895-join-userless-collabs
LB-871: Twitter posts on timeline don't have the avatar. The avatar is showen then on embed.

Add figure for twitter timeline posts.