Remove the auto-focus on install
Remove the auto-focus on install

The javascript code used was confusing on Chrome and Internet Explorer. So I removed it. It has no real value so I think it is better without it.

See #855

romibi/FreshRSS,superboum/FreshRSS,romibi/FreshRSS,aledeg/FreshRSS,FreshRSS/FreshRSS,samuelstein/FreshRSS,Alkarex/FreshRSS,Alkarex/FreshRSS,superboum/FreshRSS,marienfressinaud/FreshRSS,Alkarex/FreshRSS,romibi/FreshRSS,samuelstein/FreshRSS,marienfressinaud/FreshRSS,aledeg/FreshRSS,aledeg/FreshRSS,romibi/FreshRSS,FreshRSS/FreshRSS,asmundg/FreshRSS,asmundg/FreshRSS,FreshRSS/FreshRSS,samuelstein/FreshRSS,aledeg/FreshRSS,asmundg/FreshRSS,Dolomich/FreshRSS,Alkarex/FreshRSS,superboum/FreshRSS,marienfressinaud/FreshRSS,Dolomich/FreshRSS,marienfressinaud/FreshRSS,Dolomich/FreshRSS,FreshRSS/FreshRSS