fix #3519: make list sorting permanent
Do not reset sort order when switching list

Related to #3519.
Make static method call reference the class name
fix #3514: log images table should be cleaned
Clean obsolete log images information as a temporary measure

For about one year, log images information will be removed at every start.
See issue #3514.
crowdin: New translations
Merge pull request #3678 from rsudev/crowdin_translations

crowdin: New translations
crowdin: New translations
Merge pull request #3679 from rsudev/crowdin_translations

crowdin: New translations
Fixes #3518, Online log on OC without authentication not prohibited

Checks logged in status before allowing log
reduce null analysis warnings

This change allows unchecked conversion from non annotated expressions
to nonnull expressions. Those are needed whenever we call a framework
method (where we cannot add annotations ourselfes) and cause more
warnings in Eclipse than they actually help.
crowdin: New translations

Added Romanian as well
Merge pull request #3681 from rsudev/crowdin_translations

crowdin: New translations
Update changelog_master.xml
Put out as much sensor work as possible onto background threads

The sensors signals and merging are now delivered on background handler
threads instead of the UI thread.

While this might not change a lot of things in practice, it may help
with #3680.
crowdin: New translations
Merge pull request #3686 from rsudev/crowdin_translations

crowdin: New translations
Allow subscription to either location or direction data

The forced union of both information is not appropriate in several
activities where only GPS data is needed, or where direction data
update less components than location data (such as cache lists).

This is part of work on #3680.
Use a synchronized method to please FindBugs
Handle history list differently than other lists

History list cannot be sorted. Using the same comparator as other lists
will make us lose the chosen sorting order (see #3519).