Issue #409: Edit "Personal Cache Note" and copy from it

https://github.com/cgeo/c-geo-opensource/issues/issue/409
Fix for null coords
Known limitation update

For #1843
Merge pull request #1961 from Lineflyer/release

Known limitation update
Version Info
Allow searching OC geocodes on main screen
Merge pull request #1974 from campbeb/add_oc_instant_search

Allow searching OC geocodes on main screen
#1974: change pull request as discussed

* use trim instead of deletewhitespace
gitignore moreunit preferences
Merge pull request #1957 from RuneHL/release

Fix for null coords to allow "Store for offline"
fix #1893: remove go4cache
Change log master branch

#1971
#1974
fixes #1257 - next try, only setting for default import dir
Merge pull request #1992 from Lineflyer/master

Change log update master branch
Update main/res/values-it/strings.xml

Fixed a couple of language issues.
Merge pull request #1997 from italian-geocacher/patch-2

Update Italian translation
Update main/res/values/strings.xml

#1893
+ change for myself in contributors
Update main/res/values-de/strings.xml
Update main/res/values/strings.xml
Update main/res/values-nl/strings.xml