Cancel/clear queued base learners about xcessiv HOT 2 OPEN

HI! I am aware of this issue and am currently mulling the best way to add an option to do this in the UI.

For now, please open up a Python interpreter and run the following script to delete all queued tasks from Xcessiv.

import xcessiv

PATH_TO_XCESSIV_PROJECT_FOLDER = "/path/to/xcessiv/project/folder/"

with xcessiv.functions.DBContextManager(PATH_TO_XCESSIV_PROJECT_FOLDER) as session:
    base_learners = session.query(xcessiv.models.BaseLearner).filter_by(job_status='queued').all()
    print(len(base_learners))
    for bl in base_learners:
        session.delete(bl)
    session.commit()

OPTIONAL:
Finally, once you're done, it might be helpful to clear your Redis database to get rid of the junk. Take note that this step will cancel all pending tasks. To do this, run

redis-cli -n 8 flushdb to delete database 8 (default used by Xcessiv)

from xcessiv.

It would be great if you could use the checkboxes (select all/select none) to do bulk actions for base learner - Add to stack, Delete, etc...

from xcessiv.