completed implementation of lost drone locator based on @bob01 PR (#867)
adding missing resource file.
improved open dialog logic.
Merge branch 'master' of https://github.com/DroidPlanner/droidplanner into drone_locator
Merge pull request #1177 from ne0fhyk/drone_locator

Drone locator
added droneshare conversion rate to the google analytics.
added analytics to track the number of mission files saved.
measuring the missions created and sent to the drone.
added analytics to measure usage of the flight action buttons, and flight mode selector.
added analytics for autopilot warnings.
code cleanup.
Merge pull request #1180 from ne0fhyk/analytics_update

Analytics update
CameraInfo: Adding a file with info for the GoPro Hero 4
Merge pull request #1181 from DroidPlanner/cameraInfo

CameraInfo: Adding a file with info for the GoPro Hero 4
InfoBar: Display radio signal level as invalid until a radio packet is received
Merge pull request #1184 from DroidPlanner/issue1165

InfoBar: Display radio signal level as invalid until a radio packet is received
Editor: Move anonymos methods to a switch statement
Editor: Ignore markerClicks when Marker tool is selected on editor

Fixes #952 by using the solution given on http://stackoverflow.com/a/19491272/2577890
Merge pull request #1186 from DroidPlanner/issue952

Make way-points non-select-able when a tool is selected in editor
Editor: Update the tools fragment when the editor screen is created

This fixes #1141.