Removed list of mounted routes at startup by default, with option to add it back. This would get annoying when starting the server frequently, because it printed ~130 lines of mostly useless info

Squashed commit:

[ece2260] Plaintext send_org_invite

[01d4884] Plaintext pw_hint_some

[6ce5173] Plaintext pw_hint_none

[881af3e] Plaintext invite_confirmed

[ce78621] Plaintext invite_accepted

[13a44a4] Rename send_org_invite.hbs to send_org_invite.html.hbs

[b52bf2f] Rename pw_hint_some.hbs to pw_hint_some.html.hbs

[e0d1aeb] Rename pw_hint_none.hbs to pw_hint_none.html.hbs

[898dbcd] Rename invite_confirmed.hbs to invite_confirmed.html.hbs

[107af31] Rename invite_accepted.hbs to invite_accepted.html.hbs

[d26d662] Updated send_org_invite template

[71f47af] Updated pw_hint_some template

[c2ca3c2] Updated pw_hint_none template

[50f8bfb] Updated invite_accepted template

[17f96f8] Updated invite_confirmed template

Added env variable to select config file. Initial work towards groups and added tooltips with descriptions and nicer names

Implement admin JWT cookie, separate JWT issuers for each type of token and migrate admin page to handlebars template