Fixed incorrect flight time issue.

Fixed app crash when viewing the battery extra info on phone in portrait.

DroidPlanner v3.0.11 beta release:

* Fixed issue causing the `CardWheelHorizontalView` to jank when using with a survey mission item.
* Fixed issue causing the reset of survey mission items parameters in the editor screen.
* Added preference options for the display of the advanced submenu.
* Realtime footprint bug fix.

Version 3.0.10 beta release:

* 3DR Services lib update
* Bug fixes from google analytics reports.

Merge pull request DroidPlanner#1325 from DroidPlanner/readme_update

Readme update

Release: Update release notes

Version: Releasing version 2.8.6

Release: Bump version number

Merge branch 'master' into beta

Version: Releasing version 2.8.5

Merge branch 'master' into beta