Play Store text changes: github URL corrected, support URL added
Add time to messages when they are within the week

//FREEBIE
Always allow resend in Conversation details menu
added "not connected to a google account" to registration problems list
rewording screen security setting text

+ fix for issue #1360
add CHANGELOG.md #1161
add CHANGELOG.md and translatable version /res/values/changelog.xml
use localized timestamp format for message details

+ fix for #1419 (Delete leading zero from fragment timestamp)
Add possibility to delete contacts' identity and directory entries.

+ fix for #274
+ could be a way to remedy #791:
  deleting the wrong number from the directory,
  adding the next one on the next sync
translatable msg details: status format strings

* strings for the message details allow i10n/i18n
** transport method strings ("PUSH", "MMS", "SMS")
** transport status ("pending")
* #562 partial fix: additional new lines in message details
Merge branch 'add-changelog.md-and-translatable-version' into develop
Merge branch 'added-not-connected-to-google-account-as-possible-problem' into develop
Merge branch 'conversation-details-always-allow-resend' into develop
Merge branch 'correct-screen-security-protection-string' into develop
Merge branch 'delete-identity-key' into develop
Merge branch 'localized-timestamp-format' into develop
Merge branch 'playstore-string-url-correction' into develop
Merge branch 'translatable-transport-status-pending-string' into develop