docs: clarify that force_https trumps anything else

setup: make chardet a mandatory dependency It was made mandatory in 9685f50a69d0. At that time it seemed like it always were present due to indirect dependencies, but apparently that is no longer the case.

hg: read hgrc, also in repo_scan This might make a difference in some real world cases.

db: read hgrc in Repository.scm_instance_no_cache and Gist.scm_instance This will make sure .hg/hgrc is read in some code paths where it was missing. That might make a difference in some real world cases.

db: inline Repository._ui

i18n: fix odd space before ?

Merge stable

i18n: updated translation for Portuguese Currently translated at 45.8% (498 of 1087 strings)

i18n: updated translation for Greek Currently translated at 98.7% (1073 of 1087 strings)

i18n: updated translation for Greek Currently translated at 97.6% (1061 of 1087 strings)