- Allow to delete current avatar

- #2153 remove require for gravatar

- #1496: fallback plain text
- #1002: add date header
- #913: fix encoding of header

Signed-off-by: Unknwon <u@gogs.io>

Signed-off-by: Unknwon <u@gogs.io>

- fix delete user but repository watches are not decreased

- templates/org: mirror fix on name output
- routers: add missing error check

- routers/user: little code format
- conf/locale: update French locale

It is now possible to input ssh keys in a number of formats: openssh, SSH2 or just the base64 encoded key.

All basics are implemented. Missing are the right (localized) strings
and the page markup could have a look at by a frontend guy.

Conflicts:
	modules/setting/setting.go

Conflicts:
	templates/repo/release/list.tmpl
	templates/user/dashboard/dashboard.tmpl

Conflicts:
	routers/repo/setting.go

Fixes issue #370: https://github.com/gogits/gogs/issues/370

Removes the limitation to RSA and enables us to use all key types
SSH recognizes.