Optimization of notification_apis:

• introduced reduced notification view, providing raw account and post IDs to eliminate joins to big tables before actual filtering
• updated notification API functions to use faster view.

added 1 commit

• 355e3233 - Added missing file.

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added 1 commit

• db3f8e8c - Added missing view definition

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added 1 commit

• f81ba1b5 - Added conditional drop of existing function

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merged

mentioned in commit 45c28831