Merge pull request #65 from pakozm/devel

Devel
Removed not necessary file
Merge branch 'devel' into pako-devel
Merge branch 'devel' into pako-devel
Added utilitiy for weight filters image generation
Merge pull request #66 from pakozm/devel

Devel
Merge branch 'master' into pako-devel
Improved input filters
Updated filters
Added operator % to string metatable
Modified trainable to avoid the use of large Lua tables
Problems with trainable
Merge branch 'devel' into joan-devel