Merge pull request #7 from XORwell/master

some Rails 3 idiom ==> Rails 4
prevent mobile browser auto-scaling
add possibility for Gemfile.local
non-verbose logging of rake calls
new logo, minor style changes
add footer
change all flash:success to :info
colored log formatting
logging for feed updates
care about all updateable feed attributes
improve readability and style
fix "binary data" error reports for feed etags

No tests, since there's no actual error, only a log entry.
Revert "colored log formatting"

Colors are nice to look at, color codes are not.
This reverts commit 532ef17d6748fb9c8d74777f673c85191d43fa1f.