* fix unclosed file descriptors
* remove various compiler warnings
sometimes it was only ambiguous indentation, sometimes bugs were fixed:
- forgotten `break;` instructions or `fallthrough` annotations:
- src/ANT/ANTChannel.cpp
- src/Charts/CriticalPowerWindow.cpp
- src/Charts/MUPlot.cpp
- src/Core/DataFilter.cpp
- src/FileIO/RideFileCache.cpp
- src/FileIO/RideFileCommand.cpp
- src/Train/DialWindow.cpp
- forgotten braces:
- lmfit/lmmin.c
- src/FileIO/XDataDialog.cpp
- test on the wrong variables:
- src/Gui/Pages.cpp
- wrong parenthesis
- src/Charts/CPPlot.cpp
- missing macro argument
- src/Cloud/WithingsDownload.cpp
- missing `return;` statement
- src/Cloud/Xert.cpp
- unused variables
- src/Gui/DiarySidebar.cpp
- unclear indentation
- src/Core/RideItem.cpp
- src/FileIO/BinRideFile.cpp
- src/Metrics/PaceZones.cpp
- src/Metrics/RideMetadata.cpp
- src/Metrics/Zones.cpp
* remove unnecessary Leaf::Parameters enum value from data filters
lists of parameters don't exist as such outside of the parser, and have
no business using the same type `Leaf` as complete terms anyway
* remove unnecessary argument
`leaf1.print(leaf2,...)` would print `leaf2` and completely ignore
`leaf1`, so now `leaf2.print(...)` is used instead
Upgrade to QWT 6.0.1, but still uses a locally patched copy
since support for 8 axes has not been included, despite it
being a relatively simple patch.
Fixes#634.
Fixes#567.
