Add ability to purge remote content and search index

[pullopen]

Is your feature request related to a problem? Please describe.
I notice that after a while, the search_index and database file grows bigger and bigger, filled with remote article that we usually do not need or understand, and taking too much disk space.

Describe the solution you'd like
I would like to have a plm order to purge remote content as well as the related search index.

Describe alternatives you've considered
Or would you please give me some instruction?

[trinity-1686a]

for the search_index, you can (or a future sub-command can) simply delete the search index, and recreate it with plm. However it won't have much of an effect if remote content still exist in the database as it will just get reindexed

[pullopen]

for the search_index, you can (or a future sub-command can) simply delete the search index, and recreate it with plm._ However _it won't have much of an effect if remote content still exist in the database as it will just get reindexed

Yes, so I'm asking if there's a way to safely delete remote content in database without affecting the local one. But thank you for simplifying the 2 questions into one :)