Fixed clang warning

Found with Xcode 5
Added properties for download progress
Added properties for download progress
Unzipping data in background

Unstable
Added content-length wrapper
Unzipping data in background
Added properties for download progress
Replaced properties with methods in protocol
Using typedefs
Fixed product name
Writing to temporary file in background queue

Unstable
Added sequence with all results
[test] replaced nil with proper messages in assertions
[CI] Added logs
[UI] Ensure main queue execution
Fixed crashes in unit tests
code style fix
Fixed dependencies