Bug fixes for Login and WELIB (#242)

Fix login (when using latest CWA in dev)
Add PRIORITIZE_WELIB option
libgen seems to be back, revert the url rewrite

Should fix #242 and #226

readme.md

@@ -82,6 +82,7 @@ Note that if using TOR, the TZ will be calculated automatically based on IP.
 | `BOOK_LANGUAGE`        | Preferred language for books                              | `en`                              |
 | `AA_DONATOR_KEY`       | Optional Donator key for Anna's Archive fast download API | ``                                |
 | `USE_BOOK_TITLE`       | Use book title as filename instead of ID                  | `false`                           |
+| `PRIORITIZE_WELIB`     | When downloading, download from WELIB first instead of AA | `false`                           |
 
 If you change `BOOK_LANGUAGE`, you can add multiple comma separated languages, such as `en,fr,ru` etc.  
 
@@ -90,7 +91,7 @@ If you change `BOOK_LANGUAGE`, you can add multiple comma separated languages, s
 | Variable               | Description                                               | Default Value                     |
 | ---------------------- | --------------------------------------------------------- | --------------------------------- |
 | `AA_BASE_URL`          | Base URL of Annas-Archive (could be changed for a proxy)  | `https://annas-archive.org`       |
-| `USE_CF_BYPASS`        | Disable CF bypass and use alternative links instead       | `true`                           |
+| `USE_CF_BYPASS`        | Disable CF bypass and use alternative links instead       | `true`                            |
 
 If you are a donator on AA, you can use your Key in `AA_DONATOR_KEY` to speed up downloads and bypass the wait times.
 If disabling the cloudflare bypass, you will be using alternative download hosts, such as libgen or z-lib, but they usually have a delay before getting the more recent books and their collection is not as big as aa's. But this setting should work for the majority of books.