libdeng2|LogBuffer: Allow specifying the auto-flush interval
Fixed|libshell: Automatic server discovery was not started in Shell apps
Shell: Immediately update log history when receiving entries

Things like autocompletions are better printed sooner rather than
later for better UX.
Documentation|libappfw: Corrected API doc for MenuWidget
Merge branch 'master' of https://github.com/skyjake/Doomsday-Engine
Git: Ignore backup files in source tree
Shell|GUI: Added options for public server and shell password

The New Local Server dialog now offers an easy way to specify whether
the server should be announced publicly and what is the Shell password.
libdeng2|App: Added option "-errors" for secondary warning/error output

By default all output goes to doomsday.out. "-errors" sets the name
of a secondary output file where only warning/error messages are
written. Everything still goes also to doomsday.out.
libshell|LocalServer: Write server errors to a separate file
Documentation|Console|FX: Added help for bloom cvars
ResourceSystem: Renamed a variable for clarity
Merge remote-tracking branch 'remotes/origin/master' into savegame-refactor