Fine tuned Satfinder screen in order to fit latest plugin changes

Some small adjusts done at the Satfinder screen in order to fit latest plugin commits available http://sourceforge.net/p/openpli/enigma2/ci/dded52971d8b8a5eac8f191b46578408a4f3616c/

- Vertically centered SNR and AGC labels (inside bars)
- Reduced left widgets width in order to expand config widget
- Expanded a little config widget, so NIM/Tuner name will not be over item title
- Reduced item and font height, so scroll bar is not needed when using DVB-S2 system.

![satfinder_20131026](https://f.cloud.github.com/assets/348516/1414677/d173ff7e-3e9b-11e3-8a26-255e4241e238.jpg)