Better curve labels

[luciansmith]

Uses curve names or datagenerator names before IDs for labels.

[sonarcloud[bot]]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

No Coverage information
0.0% Duplication

[codecov[bot]]

Codecov Report

Patch and project coverage have no change.

Comparison is base (ac14afd) 95.79% compared to head (ae3d699) 95.79%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## dev #140 +/- ## ======================================= Coverage 95.79% 95.79% ======================================= Files 88 88 Lines 9399 9399 ======================================= Hits 9004 9004 Misses 395 395 ``` | Flag | Coverage Δ | | |---|---|---| | unittests | `95.79% <ø> (ø)` | | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=biosimulators#carryforward-flags-in-the-pull-request-comment) to find out more. | [Impacted Files](https://app.codecov.io/gh/biosimulators/Biosimulators_utils/pull/140?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=biosimulators) | Coverage Δ | | |---|---|---| | [biosimulators\_utils/sedml/exec.py](https://app.codecov.io/gh/biosimulators/Biosimulators_utils/pull/140?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=biosimulators#diff-Ymlvc2ltdWxhdG9yc191dGlscy9zZWRtbC9leGVjLnB5) | `99.20% <ø> (ø)` | |

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