Add pagination to plot_recordings

[codecov-commenter]

Codecov Report

Attention: 2 lines in your changes are missing coverage. Please review.

:exclamation: No coverage uploaded for pull request base (master@87de1b6). Click here to learn what that means.

Files	Patch %	Lines
bluepyefe/cell.py	92.85%	2 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #172 +/- ## ========================================= Coverage ? 74.05% ========================================= Files ? 38 Lines ? 2390 Branches ? 0 ========================================= Hits ? 1770 Misses ? 620 Partials ? 0 ```

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[ilkilic]

Thank you. I have run tests on two separate extraction and I can confirm that the figures have been plotted correctly