Merge branch 'develop' of https://bitbucket.org/jakimowb/eo-time-series-viewer into feature/pixelloader

Crosshairs: refactoring, unified per mapview, position remains on position of last mouse-click (closes issue #12)

added TimeSeriesViewer.mapLayerStore()->QgsMapLayerStore()

timeseriesviewer/__init__.py: loads QGIS resources on start (for dev environments), added workaround for PyQtGraph issue 774,
timeseriesviewer/__main__.py refactored

mapvisualization.py fixed renderer export

added resourcemockup.py

utils.py improved qgis app initialization, added QgsPythonRunner implementation (for testing)

metadata.txt, pb_tool.cfg, make/deploy.py: refactoring, qgis min/max version by QGIS_MIN / QGIS_MAX

fixed DTG parsing from ENVI header
recognizes YYYY as date

stacked image import preserves ColorTable and CategoryNames information (from first input stack band)

mapvisualization.py renderToXml now uses in-memory VRT as dummy VRT

utils.py createQgsField extended to other types of numpy floats
timeseries.py fixed verifyInputImage

startet implementatino of stackedbandinput dialog and required classes

updated plugin about text

Merge branches 'develop' and 'feature/bugfixes' of https://bitbucket.org/jakimowb/eo-time-series-viewer into feature/bugfixes