[c_frame] fixed subtle bug '\t' vs ' 'x4 in nested lists; added support for \anchor and \image blocks
[c_frame] fixed subtle bug '\t' vs ' 'x4 in nested lists; added support for \anchor and \image blocks

vovkos/doxyrest,vovkos/doxyrest,vovkos/doxyrest,vovkos/doxyrest,vovkos/doxyrest