templatefilters: drop old jsonescape() function It's been superseded by encoding.jsonescape(paranoid=True).

templatefilters: make json filter be byte-transparent (BC) (issue4926) This is necessary to preserve filename encoding over JSON. Instead, this patch inserts "|utf8" where non-ascii local-encoding texts can be passed to "|json". See also the commit that introduced "utf8" filter.

hgweb: add option to convert encoding of graphdata() Because future patches will change "|json" filter to handle input bytes transparently, i.e. use UTF-8b encoding, "{jsdata}" must keep data in UTF-8 bytes, whereas "{nodes}" are text. This patch inserts encodestr() where localstr is likely to survive.