Image macro and svn_prop.py ignore [trac] htdocs_location setting

[Jun Omae]

Image macro and browser page for resources with svn:locks generate <tracenv>/chrome/common/... url. It should use [trac] htdocs_location setting.

$ git grep 'chrome.*common/' 0.12-stable | sed -n '/tests/d; /[.]py:/p'
0.12-stable:trac/versioncontrol/svn_prop.py:        return tag.img(src=context.href.chrome('common/lock-locked.png'),
0.12-stable:trac/web/chrome.py:        `/chrome/common/`.
0.12-stable:trac/wiki/macros.py:                raw_url = formatter.href.chrome('common/attachment.png')

$ git grep 'chrome.*common/' 1.0-stable | sed -n '/tests/d; /[.]py:/p'
1.0-stable:trac/web/chrome.py:        `/chrome/common/`.
1.0-stable:trac/wiki/macros.py:                raw_url = formatter.href.chrome('common/attachment.png')
1.0-stable:tracopt/versioncontrol/svn/svn_prop.py:        return tag.img(src=context.href.chrome('common/lock-locked.png'),

$ git grep 'chrome.*common/' trunk | sed -n '/tests/d; /[.]py:/p'
trunk:trac/web/chrome.py:        `/chrome/common/`.
trunk:trac/wiki/macros.py:                raw_url = formatter.href.chrome('common/attachment.png')
trunk:tracopt/versioncontrol/svn/svn_prop.py:        return tag.img(src=context.href.chrome('common/lock-locked.png'),