Automatic merge of T1.6-115-g0d2de70b7 and 12 pull requests

- Pull request #1082 at 8538170: Allow variable water level in glass gauge
- Pull request #1156 at f46d5f2: Fix incorrectly disabled options in train operations window
- Pull request #1091 at 492795a: Automatic speed control
- Pull request #1121 at 91d2d26: Manually Override Articulation
- Pull request #1124 at e241a0d: Built-in PBL2 brake controller
- Pull request #1128 at d116396: Particle Emitter Overhaul
- Pull request #1157 at 39cd994: Dynamic brake authorization by TCS
- Pull request #1159 at 48c9a63: Skip OR warnings about TSRE-specific token Ruler
- Pull request #1160 at c64daa0: Route Based TTrack Sounds
- Pull request #1163 at 2f9e292: Fix: Crash when using Camera 8 and F9.
- Pull request #1164 at 1ad9889: Fix: F9 crashes with a front coupled single steam locomotive by Csantucci.
- Pull request #1165 at 168c27c: docs: Add code guidelines for logging

Author: openrails-bot

Source/Documentation/Manual/sound.rst

@@ -451,7 +451,7 @@ Track Based Sounds for Routes
 
 As track based sounds (such as track joints, curve squeal, etc) are common to all rolling stock these types of sounds can be added at a route level, rather then 
 at an individual rolling stock level. This has the advantage of ensuring a level of consistency for all individual stock rather then requiring each piece of stock 
-to have appropriate sounds associated with it. It means that all rolling stock will be "automaticvally" have track sounds given to it.
+to have appropriate sounds associated with it. It means that all rolling stock will be "automatically" have track sounds given to it.
 
 This approach relies on use of the Track Region sounds configured in the TType.dat file. A base SMS file is created for the first track region sound which is played 
 continuously and contains all track related sounds that need to be played despite the region that the train is in. Further track region SMS files can be created for