Revert "add a less intimidating error message when backend times out and/or fails to return valid JSON"

This reverts commit 2ffe7a3b14caeb55a6338d769255cafa6f67d3c6.
set detect language to off by default
disable headlines grouping for recently read vfeed
fixed feed caching logic for multiuser scenario

only vanilla feed data may be cached as every user may have different
fetched feed hooks to apply
deactivated FeedParser re-use as it is not multiuser safe

different users may have different fetch feed and feed fetched hooks
Merge pull request #353 from rangerer/feed_caching_fix

Feed caching fix
exception handler: remove report to tt-rss.org
handle_rpc_json: do not crash if net-alert is somehow unavailable
Revert "exception handler: remove report to tt-rss.org"

This reverts commit b55aec078c18b3db85d34329be3f01364e383667.
add ttrss version and init params to reports
make_init_params: add some additional information useful for reporting
update report to tt-rss prompt
exception_error: support objects in ext_info
make_init_params: add theme
make_init_params: add plugins
init params debugging: support objects etc
exception_error: always stringify ext_info
rebase translations
Update german translation
Merge pull request #355 from HeikoAdams/master

Update german translation