always show "read page" form, only mark displayed entries as read

This prevents from mass-marking as read entries that were created by the time the user submit the "read all" form.
Merge pull request #82 from bors-ltd/bors-ltd/always-read-page-form

always show "read page" form, only mark displayed entries as read
Revert "Remove via from tweet texts"

This reverts commit 820760d3d3090cc6c750650ab3ee98f4b0efd87e.
ignore pycharm files
settings: less verbose cron
feeds: hide "read all" button

Too risky to click on this button on a mobile screen, instead of the "read page" button.