Fix the Octopus to hold on to connections and to disconnect them using boost rather than setting a zero callback.
Rename inner scope floater var to satisfy MSVC
Merge remote-tracking branch 'melanie_t/master'
SH-4274 FIX Adding RegionHandshakeReply flags for SSA

Adding a flag to hint to the sim that this viewer knows how to handle
AvatarAppearance messages for self in SSA-enabled regions.

Upstream patch: https://bitbucket.org/nyx/sunshine-flags/commits/5fdc790f6d8b52e01a6f55ab0a94590b27ecbb06
Fix build on arch where python 3 is default

Patch by Jimmy Buse
Copypasta went stale, I had to throw it out.

This commit removes the hardcoded see avatars text that replaced the label of the checkbox on the about land floater regardless of conditions.
Also adds the checkbox translation from v3 for Portuguese.