Bugfix: golang 1.10 in travis build

Update vendored dependencies

This switches the BLE implementation to the go-ble fork, and hopefully
fixing MacOS issues on High Sierra.

Golint fixes

Improve FeelVR file loading

Support kiiroo files that have the `text` field stored in a `subs`
object.

Sort the events in the Kiiroo scripts on load.

vlc: Bumb version

blender: Delete previous action button

Include a button that will delete the previous action. This is usefull
when scripting a video frame by frame, and an action was insterted,
only to realize it was not yet finished in the next frame.

Distribute funscripting as a zip file

Release files in text format are hard to download correctly from github.
Blender can install zip files as well. So we just zip up the file and
distribute it that way.

Bugfix UI websocket disconnect on new script

Fixes a bug where the UI websocket gets disconnected when loading a new
script.

blender: Update images in doc

Removed the panel from the screenshots when no movie has been imported
yet. Since it's been changed to only display if only one scrip is
selected.

Update vendor dependencies