update .hgignore

adds more characters to escape for shell completion

fix outgoing list sort

sort files in outgoing cmd

add dav-sync outgoing command

merges feature/dav-edit

adds support for option terminator '--' feature/dav-edit

adds support for -L option in dav edit feature/dav-edit

cmd_edit: fixes wrong return code if the user did not change the file feature/dav-edit

cmd_edit. fixes wrong variable in second strlen() call feature/dav-edit

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