Starting to fix issue #684
Merge branch 'master' of https://github.com/DroidPlanner/droidplanner into fix_parameters_screen
fixed issue #684
Merge pull request #690 from ne0fhyk/fix_parameters_screen

Fix issue #684 , Problems with decimal point on Parameters screen
updated gradle build files to support the new version of gradle (1.10+), android build tools (0.9.+) and android-studio (0.5.1+)
updated generic method definition.
added null check.
- fixed typos
- added class documentation to MissionItemView
- removed unused methods, and fields.
Comment out follow me option until it is implemented.
Merge pull request #704 from tensafefrogs/master

Comment out follow me option until it is implemented.
Clear the previous flight path when arming. Fixes #701.
Merge pull request #705 from tensafefrogs/flight-path-clear-on-arm

Clear the previous flight path when arming. Fixes #701.
Merge pull request #702 from ne0fhyk/fix_misc

Miscellaneous set of fixes