increased version number
updated changelog
Use explicit C locale in Misc::StringUtils (Fixes #1216)
Fix travis
Reset item model when reference is reset (Fixes #1628)

This caused crashes when the window was resized after the reference no longer exists (e.g. when a savegame is loaded)
Fix compile error for OPENMW_USE_FFMPEG=0
Fix initializing CharacterController with fists or spell equipped
Cancel queued view mode switch when switching view mode (Fixes #1618)
Merge branch 'openmw-31'