Scipion-pyworkflow

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- Hotfix: fix links more versatile.

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- Hotfix: Fixed updated protocol icon

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users:
- File browser: error while getting the preview thumbnail are reported as the preview string and logged.
- Wrong status when updating: When scheduling protocols, they were wrongly showed as failure temporarily.


developers:
- Using logger in executor.py
- Fix: --overwrite problem. CONDA_ACTIVATION_CMD was disappearing form the config
- Fix: plugin manager error. wait.png renamed to wait.gif
- Improvement: Tolerate protocol loading when attribute type is changed by developers.
- CONDA_ACTIVATION_CMD is now a Config variable.
- Flag to indicate if steps list has new steps. Useful for new streaming approach.
- Base streaming protocol: ProtStreamingBase.

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users:
- Fix: with some host.conf, where current working dir is not "transferred" to the node, execution failed when
creating the logs cause they where relative. Now they (log paths) are passed to pw_protocol_run as absolute paths

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users:
- Fix: rare error making subsets of self referencing output.
- Schedule process: Logging starts from the very beginning. Better feedback when there is an error.
- Message is shown in project's info log when discovering viewers for the firs time.
- Fix: Expert level pointers not clearer anymore after copying or deacivating expert level.
- Protocol list output improved --> scipion3 protocols --with-doc
- Scheduling: more informative log lines.
- Exporting a workflow does not show the final confirmation dialog (just a log line)
- Font size responsive in file browser text box.
developers:
- Fix: rare error when loading pointers with extended from the database
- More modules using logging: gui/project.py, mapper/sqlite.py
- Pointer.set: optional parameter to cancel extended reset. Used from mapper.
- Pyworkflow Domain now is operational. Still ED plugins needs adaptation.
- String class offers getListFromRange and getListFromValues for convenience when param any ot the Ranges
- getListFromValues, returns str list as before, but optionally you can pass a caster (int, float,..)
- GE validator: tolerates None values.
- Form.addBoolean() helper added to facilitate Boolean param definitions. TODO: Do it with the rest?
- dependencies updated
- icons changed to png 32, so transparency is understood by pillow latest version
- unused icons removed
- icon names all centralized in Icon class
- getImage: caches the images, rename gif to png.

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Users:
- Fixing an error refreshing the workflow:
* the protocol status changed intermittently
- "Use queue?" label and help reworded and linked to documentation site
- "Wait for" label and help reworded and linked to documentation site
- Fix: New protocols, without sibilings were wrongly located at the top.