refactor: replace custom CRM with Monica fork

CONTRIBUTORS

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+This is the list of all the people that make this great software.
+Add yourself at the bottom of the list if you do contribute and wish
+to appear as a contributor. At the very minimum, the GitHub username
+is required if you do wish to appear. Other fields are optional.
+
+Format: Firstname Lastname @github-handle <email>
+
+CONTRIBUTORS
+------------
+Maazarin @djaiss
+Alexis Saettler @asbiin <alexis@saettler.org>
+Kirk Strauser @kstrauser
+Taryn Hill @Phrohdoh <taryn@phrohdoh.com>
+Andreas Zweili @Nebucatnetzer
+Kadir Yamamoto @yamakadi
+Rocco Palladino @rpalladino
+Sebastian Gumprich @rndmh3ro
+Brendan Butts @sevenecks <bbutts@stormcode.net>
+Christian Fratta @hherebus
+Jaroslav Lichtblau @svetlemodry
+Lee Fenlan @themodem <lee@fenlan.uk>
+Aaron Johnson @aejnsn
+David Egan @degan6 <dwe@eganrm.com>
+Scott Williams @scott-joe
+Craig Davison @davisonio <craig@davison.io>
+Michael Heap @mheap <m@michaelheap.com>
+Matthew Du Pont @mattdp <monica@matthewfdupont.com>
+Kovah @kovah <contact@kovah.de>
+Steven Maguire @stevenmaguire <stevenmaguire@gmail.com>
+@erdmenchen
+Tom Rochette @tomzx <tom@tomrochette.com>
+Roland Szabo @rolisz <rolisz@gmail.com>
+Theo Mathieu @Mokto
+Daniel Pieper @danielpieper <monica@daniel-pieper.com>
+Andrew Paul Smith <github@chucklesthebeard.com>
+Brian Clemens <brian@tiuxo.com>
+Christopher Zentgraf @TheZenti <git@the-zenti.de>
+Lorenzo L. Ancora @LorenzoAncora <admin@lorenzoancora.info>
+Ben Dauphinee @bendauphinee <me@bendauphinee.com>
+Benjamin Dowson @lattlay <bdowson7@gmail.com>
+Stuart Johnston @mechanarchy
+Bryan Kam @lydgate
+Tom Granot @TomGranot
+Chris Forrence @chrisforrence
+Mohammed Al-Sahaf @Mohammed90
+Ivan Kruchkoff @ivankruchkoff <ivan@kruchkoff.com>
+Joaquim Monserrat @jeremies
+Jack Kuo @JackKuo-tw <jackkuo@jackkuo.org>
+Russell Ault @RussellAult
+Martijn van der Ven @Zegnat <martijn@vanderven.se>
+Matthew Fitzgerald @mfitzgerald2 <matt@mfitz.net>
+Simon Van Accoleyen @SimonVanacco <simon@vanacco.fr>
+Michael Bianco <mike@mikebian.co>
+Ben Fesili @benfes
+Markus Dick @markusdick
+Jacek Sawoszczuk @jsawo
+Dung Nguyen @nhymxu
+Krzysztof Rewak @krzysztofrewak
+Geidson Benicio @geidsonc
+Maximilian Arzberger @Schlauer-Hax <hax@bbn.family>
+Gregor Bigalke @GregTCLTK <greg@bbn.family>
+Julián Garcés Rodríguez <juliangarces.jg@gmail.com>
+Alberto Cuevas Ocegueda <mexslacker@gmail.com>