Make the functions that translate between symbolic and numeric boundary indicators available globally.
Fix a style issue and remove an unnecessary local variable.
Fix wrong comment.
Trim whitespace from boundary indicator names.
Parse boundary names also in the 'constant' boundary temperature model. This is a bit inconvenient because at the time we'd like to parse the data, we do not yet have access to the geometry model and so we need to defer to a later time :-(
Fix screen output file.