removed redundant code, RBW will always default to the lowest value
disable cfreq/fstep controls while in modes that have no frequency controls
added iq output connector as a device property
changed iq output flag to true for WSA5000-220 model
Merge pull request #93 from mfarhan12/disable_cfreq_mode

disable cfreq/fstep controls while in modes that have no frequency contr...
Merge pull request #94 from mfarhan12/iq_output_property

added iq output connector as a device property
fixed issue where plot did not recenter if user changes frequency using panel controls
combined code that was doing the same thing
make IQ in last option
descriptive mode labels
make IQIN last for all models
reformat text
Merge pull request #96 from wardi/meaningful-modes

Use meaningful text for mode drop-down
make spin box step buttons set state immediately
Merge pull request #97 from wardi/immediate-buttons

make spin box step buttons set state immediately
Merge branch 'fix_hdr_axis'
fixed merge conflicts