Reimplemented get_blog/get_blog_entries with fixes

Reimplemented get_blog/get_blog_entries. Fixed lack of reblogs in results. Small changes in error handling - more cases are automatically recovered, especially when parameters are supplemented from defaults.

[Fix] get_content exception with observer specified

[Fix] restored handling of mutes in load_posts_keyed (still in use)

added 36 commits

• a1431629...417cd793 - 35 commits from branch develop
• bc320b38 - [ABW]: merged with latest develop

Compare with previous version

merged

mentioned in commit d8746190