* Improve plot naming for depth track plots
* Move template text replace to string tools
* More data available for object template text
* Set plot visible and define default object name template text
* Add curve name template and handling of string variables
* Mark autoName as obsolete field
* Use key-value map to populate variable values
* Add curve naming methods Auto, Custom and Template
* Avoid creation of curve legend widgets during construction of a multi plot
* Make sure default z-value is correct to avoid expensive Qwt updates
* Avoid duplicate plot updates
* Do not create internal Qwt legend by default
* RFT import: Avoid expensive method throwing exception if no data is found