Change log finetuning

Removed "New Feature" section for next maintenance release as there are none.
fix #2259: premium caches not identified in searches
Merge branch 'release' into upstream

Conflicts:
	main/res/values/strings.xml
Refactoring: remove non-sensical test, this can never be null
Refactoring: simplify code
Refactoring: add documentation about null-ness
Refactoring: document and refactor SearchResult constructors
Change log update release

#2259
fix #147: host markers on our own site
Merge branch 'release' into upstream

Conflicts:
	main/res/values/strings.xml
Uploading of modified coords to geocaching.com
Update main/res/values-pl/strings.xml

Spelling and grammatical mistakes corrected.
refactoring: reduce number of prepared statements

* for less memory usage
stronger compiler warnings in calendar addon

* disable compiler warnings for generated code
* disallow empty blocks
Merge branch 'cache_coords_wpt_ng' of https://github.com/triakcz/c-geo-opensource into upstream
Merge pull request #2272 from mieczyslaw/master

Spelling and grammatical mistakes corrected.
Version update
Merge branch 'release'

Conflicts:
	main/res/values/strings.xml
Fix crash on single cache map

It was due to a null searchIntent after the refactoring in
6191b4e2aa3b1dea8dd8a41f5396d5e069662f3f which assumes that the copy
constructor would not be called with a null value.

Found and diagnosed by rsudev.
Refactoring: use isEmpty() where appropriate