use RedisStore, change auth level, sort guests
Merge pull request #43 from tomekwszelaki/task/use_redisStore_for_sessions

use RedisStore, change auth level, sort guests
add footer. resize picture on /home tab
Merge pull request #44 from tomekwszelaki/task/ui_corrections

add footer. resize picture on /home tab
Merge pull request #45 from tomekwszelaki/develop

synchronize develop with master