Feed list context menus

• Cleaned up context menus
• Delete tag option in context menu
• Rename feed/folder/tag option directly in context menu
• Moved feed/folder settings view into the detail views
• Added update button to smart searches context menu
• Added additional edit details view for smart searches

Changes

• Tweaked Text Extraction
• Removed regular sync interval setting, in favor of the already existing sync interval settings [macOS]
• The regular sync interval can now be set as low as 15 minutes, previously 3 hrs [macOS]
• Increased number of synced tags and searches to 50, but they are synced at most every 6 hours [Inoreader]
• Previously read articles are at most synced every 6 hours [Inoreader]
• Added “Share Article” to double tap actions in article view

Fixes

• Fixed typo in edit tags view
• Possible crash in article view with italic fonts
• Fixed back button in feed/folder settings
• Fixed renaming smart searches
• Removed unnecessary settings for per-search settings view
• Fixed mark read on scroll in per-search settings