fix schema for favicon_avg_color
store favicon color as #rrggbb; process existing favicons
only enable colored favicons in vfeeds; fix RGB triplet packing
implement basic moz gradient for feedicon color
use w3c gradient definition
add row backgrounds in normal mode
add schema version 177 upgrade scripts
do not color predominantly white/black rows
Updated Spanish translation
Merge pull request #156 from Menti/master

Updated Spanish translation
try to improve color guessing algorithm a bit
Merge branch 'master' of github.com:gothfox/Tiny-Tiny-RSS
remove hsl stuff from classes/feeds, we take care of this when choosing the color
make gradient less visible on read headlines
properly remove and replace favicon color when favicon gets manually removed/uploaded
use hashed guids in a hopefully backwards compatible fashion
Polish translation update.
Merge pull request #157 from sq5gvm/master

Updated polish (pl_PL) translation