Remove a trace statement in i18n.go

No need for all the 'Resolving message' lines in the terminal output
when using the internationalization features.  Just seems to obscure
more important messages.
Fix key quoting in .json error templates
Merge pull request #466 from pushrax/fix-json-errors

Fix key quoting in .json error templates
Skip attribute events in watcher. Fixes issue #460

On filesystems with atime enabled (like OSX) an infinite loop can be
triggered. git describe --dirty which is used to set APP_VERSION
changes atime of project files and a rebuild is triggered which tries
to set the APP_VERSION. More details in the issue.
Merge pull request #464 from jcvernaleo/jcv_i18Log

Remove a trace statement in i18n.go
Merge pull request #475 from ottob/issue460

Add attribute event ignoring in watcher. Fixes issue #460