Some minor fixes

- Fixed wrong coloring on some output comments
old:
![color_verbose_old](https://cloud.githubusercontent.com/assets/5294234/4265577/a85e27f0-3c55-11e4-828c-331c7d4d9107.png)
new:
![color_verbose_new](https://cloud.githubusercontent.com/assets/5294234/4265579/bb5d5c04-3c55-11e4-8d1d-a999e04b610b.png)

- Empty lines gives wrong output
pacman.log:
![verbose_log](https://cloud.githubusercontent.com/assets/5294234/4265593/74464122-3c56-11e4-8c3a-5fe8e19b7213.png)
old:
![verbose_old](https://cloud.githubusercontent.com/assets/5294234/4265594/834c4838-3c56-11e4-8305-d9ab5897c7fa.png)
new:
![verbose_new](https://cloud.githubusercontent.com/assets/5294234/4265596/8c38ed8e-3c56-11e4-98ba-4fbbe579c4d4.png)


**Other fixes:**
- Verbose output missed warnings info
- --help and --verbose didn't work
- Changed -err to --err
- More precise filters