Update changelog_release.xml

- Adapted to new format
- Some wording corrections
- Milestone Corrected
- Appended section for possible next bugfix release
Call vacuum when cleaning the database
fix #3803: import from android wrongly enabled in history
refactoring: remove activity reference
Revert "Call vacuum when cleaning the database"

This reverts commit 5133e107e51e7e97f40644fc9dcad6a9ba42ac28.

Fix for #3827.
refactoring: avoid activity references
fix: don't show suggestion which cannot be found

Until now the owner display text was suggested when searching for the
owner. But the online search only searches for the user real name. E.g.
when a cache displayed "X and Y" as owner, the real owner is often only
"X".
change: set ownerUserId for OC caches

Some parts of our code expect this field to have some useful values.
Therefore don't leave it empty for OC caches.
fix #3814: enable list menu after leaving history
Dump memory on OOM to investigate #3818
crowdin: New translations
Merge pull request #3832 from rsudev/crowdin_translations

crowdin: New translations
refactoring: remove listener references to cachelistadapter
Update IntelliJ IDEA files
Upgrade to RxJava 0.18.3 and use the new Scheduler interface
Load friends logs and own log in parallel
Separate cache parsing and database saving code

This allows us to avoid saving and reloading logs in the case where we
want to add friends and own logs.
Parse and load additional logs and rating in parallel
Mark method return as NonNull

The interface has changed in a recent commit.
fix #3836: cache type is no longer recognized due to gc.com change