Tweak some tooltips, especially those for "protect subject".

addon/_locales/de/messages.json

@@ -132,7 +132,7 @@
         "message": "Nachrichtenbetreff schützen"
     },
     "optionsProtectSubjectsTooltip": {
-        "message": "p≡p ersetzt alle Betreffs für die Nachrichtenübertragung"
+        "message": "p≡p ersetzt alle Betreffe für die Nachrichtenübertragung auch für OpenPGP-Kommunikationspartner"
     },
     "optionsEnableSync": {
         "message": "p≡p Sync aktivieren"

addon/_locales/en/messages.json

@@ -132,7 +132,7 @@
         "message": "Protect message subject"
     },
     "optionsProtectSubjectsTooltip": {
-        "message": "p≡p will replace all subjects for message transmission"
+        "message": "p≡p will replace all subjects for message transmission, also for OpenPGP communication partners"
     },
     "optionsEnableSync": {
         "message": "Enable p≡p Sync"
@@ -144,7 +144,7 @@
         "message": "Show a warning when a message loses security through reply or forward"
     },
     "optionsWarnUnencryptedTooltip": {
-        "message": "p≡p will ask you for confirmation before sending an unsecure message in a conversation which was formerly encrypted"
+        "message": "p≡p will ask you for confirmation before sending an unsecure message in a conversation which was previously encrypted"
     },
     "optionsPassiveMode": {
         "message": "Enable Passive Mode"