Code overhaul should be done if no devices have issues.

-- Added some getters/helpers to SignalInfo.java to allow access to underlying members in the signal classes

-- LTE_RSSI reports correctly now. Bug was in the text data not being bound right

-- MainActivity.java reworked so it could bind data from the new signal classes to the TextViews properly.

-- Migrated some signal related methods to the signal classes (like those related to LTE RSSI)

-- Reworked SignalData.java so any of the real signal logic was abstracted out of it completely.