merge to resolve multiple pickle security issues (#1728)

* 注释调试if分支

* support pdf url for latex translation

* Merge pull request from GHSA-mvrw-h7rc-22r8

* 注释调试if分支

* Improve objload security

* Update README.md

* support pdf url for latex translation

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Co-authored-by: binary-husky <96192199+binary-husky@users.noreply.github.com>
Co-authored-by: binary-husky <qingxu.fu@outlook.com>

* fix import

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Co-authored-by: Longtaotao <longtaotao@bupt.edu.cn>
Co-authored-by: iluem <57590186+Qhaoduoyu@users.noreply.github.com>

crazy_functions/latex_fns/latex_actions.py

@@ -1,10 +1,11 @@
 from toolbox import update_ui, update_ui_lastest_msg, get_log_folder
-from toolbox import get_conf, objdump, objload, promote_file_to_downloadzone
+from toolbox import get_conf, promote_file_to_downloadzone
 from .latex_toolbox import PRESERVE, TRANSFORM
 from .latex_toolbox import set_forbidden_text, set_forbidden_text_begin_end, set_forbidden_text_careful_brace
 from .latex_toolbox import reverse_forbidden_text_careful_brace, reverse_forbidden_text, convert_to_linklist, post_process
 from .latex_toolbox import fix_content, find_main_tex_file, merge_tex_files, compile_latex_with_timeout
 from .latex_toolbox import find_title_and_abs
+from .latex_pickle_io import objdump, objload
 
 import os, shutil
 import re