Satfinder and service searching changes

Here are some changes regarding the improved satfinder, as discussed here:
http://openpli.org/forums/topic/27724-improved-satfinder/page__st__20__gopid__334644

Besides the changes on the satfinder screen, were added red/green buttons to scan screen and hidden the "press ok to scan" message on these screen, since this message are useless and just clutter and confuses the new actions.

Screenshots attached.

![01_satfinder](https://f.cloud.github.com/assets/348516/160966/8440d5a4-777e-11e2-8aca-dc3e0adf9603.jpg)
![02_automatic_scan](https://f.cloud.github.com/assets/348516/160967/844249de-777e-11e2-89bc-472b7a63740f.jpg)
![03_manual_scan](https://f.cloud.github.com/assets/348516/160968/8447448e-777e-11e2-94a2-06c758321e71.jpg)
![04_fastscan](https://f.cloud.github.com/assets/348516/160969/8447c4b8-777e-11e2-87ea-dfdf57f67efb.jpg)