[grl-flickr-lua] Search & Browse Public & Personal

Using the oauth functions in lua-library of grilo this lua source
implements the same search and browse operation of the c flickr source.
[lua-factory] source uses required/optional tables

Instead of using booleans to tell which key is mandatory (true) or
optional (false) in one single array we are one array to each type.
Merge branch 'toso'
[grl-metrolyrics] following the new table standard