Store repository data in data path if not previously set (#13991)

* Store repository data in data path if not previously set

* update docs

* Update docs/content/doc/advanced/config-cheat-sheet.en-us.md

Co-authored-by: silverwind <me@silverwind.io>

* update docs

Co-authored-by: silverwind <me@silverwind.io>

docs/content/doc/advanced/config-cheat-sheet.en-us.md

@@ -42,8 +42,8 @@ Values containing `#` or `;` must be quoted using `` ` `` or `"""`.
 
 ## Repository (`repository`)
 
-- `ROOT`: **~/gitea-repositories/**: Root path for storing all repository data. It must be
-   an absolute path.
+- `ROOT`: **data/gitea-repositories/**: Root path for storing all repository data. It must be
+   an absolute path. By default it is stored in a sub-directory of `APP_DATA_PATH`.
 - `SCRIPT_TYPE`: **bash**: The script type this server supports. Usually this is `bash`,
    but some users report that only `sh` is available.
 - `DETECTED_CHARSETS_ORDER`: **UTF-8, UTF-16BE, UTF-16LE, UTF-32BE, UTF-32LE, ISO-8859, windows-1252, ISO-8859, windows-1250, ISO-8859, ISO-8859, ISO-8859, windows-1253, ISO-8859, windows-1255, ISO-8859, windows-1251, windows-1256, KOI8-R, ISO-8859, windows-1254, Shift_JIS, GB18030, EUC-JP, EUC-KR, Big5, ISO-2022, ISO-2022, ISO-2022, IBM424_rtl, IBM424_ltr, IBM420_rtl, IBM420_ltr**: Tie-break order of detected charsets - if the detected charsets have equal confidence, charsets earlier in the list will be chosen in preference to those later. Adding `defaults` will place the unnamed charsets at that point.

docs/content/doc/help/faq.en-us.md

@@ -64,7 +64,7 @@ https://github.com/loganinak/MigrateGitlabToGogs
   - Windows: Environment variable `USERPROFILE`, else environment variables `HOMEDRIVE`+`HOMEPATH`
 - RepoRootPath
   - `ROOT` in `app.ini`
-  - Else `%(HomeDir)/gitea-repositories`
+  - Else `%(AppDataPath)/gitea-repositories`
 - INI (config file)
   - `-c` flag
   - Else `%(CustomPath)/conf/app.ini`