change env name from xdm_env to env
field value getting based on provider order
added provider to image
only ascii in image path
improve painting with creating the env only once
use provider tag during element tree update
fix images during start / garbage collection
a little unicode
display results of what XDM has while typing in the search bar
improve anyImage and ”Already on XDM” preview
add webroot to icon button widget

fixes 102
fixes 108
also catch UnicodeDecodeError when checking locale

fixes 106
improved i18n
more ajax on the action buttons and get download
allow gihub repo page urls as plugin repo urls and build meta.json urls

allow the download link to be the the gihub repo page url
and respect the new key branch (optional)
check if date on reldate() evaluate to something else its unknown

might be workaround for #109
use elif on format switch during plugin install
ignore *.stats files
version bump to 0.5.16
Merge branch 'release/0.5.16'