tmf: Rename time range signals

tmf: Rename time range signals

The meanings of TmfTimeSynchSignal and TmfRangeSynchSignal have changed
since those classes were first introduced. "TimeSynch" also refers to
a time range now. Rename those two signals to better reflect their
contemporary meanings:

TmfTimeSynchSignal -> TmfSelectionRangeUpdatedSignal
TmfRangeSynchSignal -> TmfWindowRangeUpdatedSignal

Change-Id: I05b2c9b8c6aaf30a07188c4695e117832aabb4b1
Signed-off-by: Alexandre Montplaisir <alexmonthy@voxpopuli.im>
Reviewed-on: https://git.eclipse.org/r/43761
Reviewed-by: Hudson CI
Reviewed-by: Bernd Hufmann <bernd.hufmann@ericsson.com>
Tested-by: Bernd Hufmann <bernd.hufmann@ericsson.com>