Finished the e-mailing rework branch, fixes #505, fixes #504, fixes #502, fixes #499
Finished the e-mailing rework branch, fixes #505, fixes #504, fixes #502, fixes #499

- this commit is mostly here to capture what was changed in hotfix 2.3.69

- e-mailing completely reworked, all e-mails now flow through the same method
- that method will handle all encryption and the decisions whether to send e-mails unencrypted to users without an encryption key, whether to keep the body of the e-mail untruncated, etc
- all e-mails are now also logged here (including the reason of a potential failure)

- new server settings for default template messages for password resets / new user welcome messages

- admin e-mail interface reworked and org admins now also have access to the features

- password resets / new user for site and org admins (where applicable) - quickly reset the password of a user and alert them using the pre-defined reset template

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- Tuned the freetext import to really accept free-text. Let me know if you have any tips for tuning the detection further!

- it now breaks the passed string on whitespace and line-break and tries to resolve the rest. Filename resolution tightened to exclude anthing that starts or ends with a .

TheDr1ver/MISP,aaronkaplan/MISP,MISP/MISP,triplekill/MISP,pombredanne/MISP,FloatingGhost/MISP,MISP/MISP,regit/MISP,SteveClement/MISP,aaronkaplan/MISP,TheDr1ver/MISP,RichieB2B/MISP,RichieB2B/MISP,RichieB2B/MISP,MISP/MISP,MISP/MISP,crruthe/MISP,Maijin/MISP,FIRSTdotorg/MISP,jiekechoo/MISP,jiekechoo/MISP,aaronkaplan/MISP,FloatingGhost/MISP,elhoim/MISP,TheDr1ver/MISP,pombredanne/MISP,SteveClement/MISP,triplekill/MISP,SteveClement/MISP,FIRSTdotorg/MISP,x86Labs/MISP,jiekechoo/MISP,elhoim/MISP,regit/MISP,x86Labs/MISP,crruthe/MISP,triplekill/MISP,cristianbell/MISP,FIRSTdotorg/MISP,elhoim/MISP,FIRSTdotorg/MISP,MISP/MISP,Rafiot/MISP,jiekechoo/MISP,Rafiot/MISP,regit/MISP,Maijin/MISP,FloatingGhost/MISP,Rafiot/MISP,SteveClement/MISP,SteveClement/MISP,Maijin/MISP,devnull-/MISP,elhoim/MISP,devnull-/MISP,cristianbell/MISP,devnull-/MISP,TheDr1ver/MISP,Rafiot/MISP,x86Labs/MISP,devnull-/MISP,pombredanne/MISP,pombredanne/MISP,aaronkaplan/MISP,Maijin/MISP,cristianbell/MISP,crruthe/MISP,FloatingGhost/MISP,x86Labs/MISP,cristianbell/MISP,RichieB2B/MISP,triplekill/MISP,regit/MISP,crruthe/MISP