cyber experts reconstructed searches on pilot 's tablet from march 16 to 23 .
lubitz locked captain out of cockpit and crashed jet a day after last search .
he ` lied to doctors by saying he was on sick leave when he was still flying '
co-pilot was prescribed ` anti-anxiety drug that can increase risk of suicide '
dna has been found from all 150 people on board .
40 ` very very damaged ' mobile phones also found at the site .