el-get: remove ad-hoc definition of junos-mode

Merged upstream.
el-get: remove definition of editorconfig

Not used.
org: add org-passwords
el-get: add missing autoloads for org-passwords
org-passwords: add some bindings to org-passwords-mode
org-passwords: add a binding to browse URL associated with an entry
org-passwords: change binding to save password to clipboard

C-c p is used by projectile.