Fixing right to left (short: RTL) support for respective RTL languages
by adding auto-detection for the user content's directionality based on
the text's language.

Fixes #612

Ref T826

- Shows all fediverse followers and email subscribers
- Shows number of email subscribers on Stats page
- Links to Subscribers page from Stats page

Requires running `make ui` to regenerate stylesheet.

Ref T826

This allows setting a URL, and then renders a <link> element
in the head of the blog. It requires a database migration.

Ref T744

Ref T805

Fixes #720

Signed-off-by: Josh Soref <2119212+jsoref@users.noreply.github.com>

Signed-off-by: Josh Soref <2119212+jsoref@users.noreply.github.com>

Signed-off-by: Josh Soref <2119212+jsoref@users.noreply.github.com>

Signed-off-by: Josh Soref <2119212+jsoref@users.noreply.github.com>

Signed-off-by: Josh Soref <2119212+jsoref@users.noreply.github.com>

Originally requested on the forum:
https://discuss.write.as/t/use-non-random-ids-for-untitled-posts-in-blog-stats/5046

Will render if a file exists at: static/local/custom.css

Ref T563

Ref T874 T744

I noticed most asset links use relative URLs, except for a few. This commit remedies this inconsistency.
OpenGraph embeds were not changed, because in my experience, some embed scrapers require absolute URLs.

Motivation: The site I use has an onion and a clearnet version, and currently, visiting the onion loads fonts, styles, and the favicon
over the clearnet.

This adds beginning email subscription functionality, with only MySQL support,
Mailgun support, and incomplete support for private instances. It includes
database changes, so run:

    writefreely db migrate

to use this feature.

Ref T856

Ref T770

This adds a configuration option to the [app] section: open_deletion. When
true, users can delete their account on their own.

Ref T319

This requires admins to generate a new encryption key with:
  writefreely keys generate

Ref T319

This mimics the admin UI for deleting a user account.

Ref T319

Ref T319

Ref T401

Ace doesn't work well with touchscreen devices, so instead we fall back to a
plain textarea.

From the writeas org on GitHub.

This fixes an issue with Safari not allowing users to select *.md files.

Closes #334

This fixes #280 in all editors, continuing work from #435.

This continues work by @cjeller1592 in #435.

Closes T492

Mostly copied the logic for pagination from non tag collection

This makes it so that if a post is updated, it will retain the language metadata rather than revert back.

This automatically lowercases language names used in code blocks when finding highlighting scripts for them, since highlightJS defines all languages with lowercase names.