Long Press to Clear Mission

Long-press on the Trash icon in the Editor screen
to clear the mission waypoints (with confirmation).

Issue: 699
Long Press to Clear Mission

Long-press on the Trash icon in the Editor screen
to clear the mission waypoints (with confirmation).

Issue: 699
Merge branch 'long_press_clear_mission' of https://github.com/kellyschrock/droidplanner into long_press_clear_mission

Conflicts:
	DroidPlanner/res/values/strings.xml
	DroidPlanner/src/org/droidplanner/activities/EditorActivity.java
	DroidPlanner/src/org/droidplanner/dialogs/YesNoDialog.java
	DroidPlanner/src/org/droidplanner/drone/variables/mission/Mission.java
	DroidPlanner/src/org/droidplanner/fragments/EditorToolsFragment.java
Merge branch 'long_press_clear_mission' of https://github.com/kellyschrock/droidplanner into long_press_clear_mission

Conflicts:
	DroidPlanner/res/values/strings.xml
	DroidPlanner/src/org/droidplanner/activities/EditorActivity.java
	DroidPlanner/src/org/droidplanner/dialogs/YesNoDialog.java
	DroidPlanner/src/org/droidplanner/drone/variables/mission/Mission.java
	DroidPlanner/src/org/droidplanner/fragments/EditorToolsFragment.java
Merge branch 'long_press_clear_mission' of https://github.com/kellyschrock/droidplanner into long_press_clear_mission

Conflicts:
	DroidPlanner/src/org/droidplanner/dialogs/YesNoDialog.java
Params Pull Fix

Fixes parameter percentage so it uses the number of parameters
received vs. the index of a given parameter in order to determine
when it is finished getting parameters from the MAV. Otherwise,
it finishes loading parameters but only gets part of them from the
MAV.

fix #710
Editor: Formating of code added by #708
Merge pull request #714 from arthurbenemann/long_press_to_clear

Long press to clear
Parameters: Formatting of #713
Merge pull request #715 from arthurbenemann/params_pull_fix

Parameter download fix
Help: Added a demo video to the help menu
Merge pull request #716 from arthurbenemann/help_video

Help: Added a demo video to the help menu
Version: Releasing version 2.2.5
Save and Load missions to/from file system

Add the ability to save mission waypoints to the file system,
and reload them.
Save/Load missions

Enable saving and loading missions to/from the filesystem.