fix TextDataStorage load_data (#128)

fix TextDataStorage load_data to load all data and not skip the first line of data

---------

Co-authored-by: Tobias Spohn <tobias@qo-243-128.physik.uni-ulm.de>

docs/changelog.md

@@ -7,9 +7,10 @@ None
 
 ### Bugfixes
 - Fixed a bug where qudi would deadlock when starting a GUI module via the ipython terminal
-- Fixed a bug with the `qtconsole` package no longer being part of `jupyter`. It is now listed 
+- Fixed a bug with the `qtconsole` package no longer being part of `jupyter`. It is now listed
 explicitly in the dependencies.
 - Fixed SystemTrayIcon error when activating GUI modules
+- Fixed `TextDataStorage.load_data` to load all lines of data and not skip the first line of data
 
 ### New Features
 None
@@ -30,7 +31,7 @@ None
 - Fixed syntax error in `qudi.util.fit_models.lorentzian.LorentzianLinear` fit model
 
 ### New Features
-- Introduced `DiscreteScalarConstraint` that expands the functionality of `ScalarConstraint` to check whether a value 
+- Introduced `DiscreteScalarConstraint` that expands the functionality of `ScalarConstraint` to check whether a value
 is in a set of discrete values
 
 ### Other

src/qudi/util/datastorage.py

@@ -725,7 +725,7 @@ def load_data(file_path):
                                  dtype=dtype,
                                  comments=general['comments'],
                                  delimiter=general['delimiter'],
-                                 skip_header=header_lines + 2)
+                                 skip_header=header_lines + 1)
         except UnicodeError as err:
             raise ValueError(f'Loading data from file "{file_path}" failed. The file you are '
                              f'trying to load is most likely no unicode textfile.') from err