utils.py refactoring (loadUi -> loadUI, affects many widget classes)

added cursorlocationvalue.py + panel
added spectrallibraries.py + panel
added a couple of new icons
added trees.py (basic TreeModel system)

TimeSeriesViewer inherits QgisInterface
refactoring maptools
 - added mapcanvas.MapTools
 - TimeSeriesviewer.onShowProfile handles location based maptool requests (CursorLocation, Temproal/spectral prpofiles)

fixed icon of mainwindow

mapvisualization: fixed several optical issues, connected buttons

changen MapViewUI layout form horizontal to vertical
added MapView specific crosshairs

added # -*- coding: uft-8 -*-   and  # noinspection PyPep8Naming to each module
added GPL License statement to each module
added from __future__ import absolute_import to each module

utils.py added loadIcon()
mapvisualization.py implemented MapCanvas loading activity bar

moved loadUIFormClass(jp(DIR_UI, p)) to utils.py and (yessss!) removed an error occurred with newline character in *.ui inline HTML

improved QGIS interaction
several UI issues and smaler bugs fixed

refactoring

toggle crosshair visibility for for all mapviews, selected mapviees, single map canvases

added logging
TsvMapCanvas.setshowCrosshair + context menu actions related to this

make::createFilePackage
auto-generated test file package __init___.py

TsvMapCanvas::stretchToCurrentExtent stretches QgsSingleBandPseudoColorRenderer

fixed AboutDialogUI call

sensors have a static id
sensors have a variable name (sensor.setName()). name changes are propagated to other components
sensor table view allows to change sensor name and shows wavelength information

refactoring
navigation to TimeSeriesDate of interest

PixelLoadWorker always returns 3D stack

added support for single band rendering based on QgsSingleBandPseudoColorRenderer

renamed MapViewMapCanvas to TsvMapCanvas
TsvMapCanvas: contextMenu actions, saveMapImageDialog(), fixed setRenderer(), pasteStyleFromClipboard(), onClipboardChange()

introduced MapTools
introduced AboutDialog and PropertyDialog
separated widgets (main UI's, smaller widgets) and docks (each defined in a separate ui file)

minor UI changes

sliders to select RGB bands