Added more explanations regarding the coordinate transformation.

Signed-off-by: Ivo Drescher <ivo.drescher@gmail.com>

analyse_logdata_ekf:
- fix the buffer to start the analyses 5s after takeoff and end
them 5s before landing for logs that start or finish in air
- add flag for turning on-off 5s late start early end buffer
- split the combined imu sensor check into checks for vibration,
bias and output predictor

- matrix in PX4/Firmware (ed6db94ec0f1ce2b6e4a975229c51fb5e3ff559a): https://github.com/PX4/Matrix/commit/03a3e3ad46d21bb90e78f8cedd3526d24617df5f
    - matrix current upstream: https://github.com/PX4/Matrix/commit/b815fc97c4e686a93a8074f27d1830a031b0d38d
    - Changes: https://github.com/PX4/Matrix/compare/03a3e3ad46d21bb90e78f8cedd3526d24617df5f...b815fc97c4e686a93a8074f27d1830a031b0d38d

    b815fc9 2018-06-12 Roman Bapst - replace quiet_NaN() with INFINITY (#70)

  _uavcan_open_request_list was accessed before it was initalized.

    - nuttx in PX4/Firmware (ed7eb8b4b4f792b8c373692812c8e255669f482e): https://github.com/PX4-NuttX/nuttx/commit/0ac630e6d0e90480121c74d59a92676f0b951dce
    - nuttx current upstream: https://github.com/PX4-NuttX/nuttx/commit/80e58380a8d2b4da0f29eee7e0a820abf0d9f793
    - Changes: https://github.com/PX4-NuttX/nuttx/compare/0ac630e6d0e90480121c74d59a92676f0b951dce...80e58380a8d2b4da0f29eee7e0a820abf0d9f793

    80e5838 2018-06-07 David Sidrane - [REJECTED] When console is absent preserve stdio fd numbering.

 - fixes #9606

This reverts commit 27e75920.

This change lead to a build error and is therefore reverted here.

    - matrix in PX4/Firmware (a138252aea03ff414ef5b4444c61e2f7d5075ebc): https://github.com/PX4/Matrix/commit/21d47424c6050bb94da5de3f7580a8df66b6fcc7
    - matrix current upstream: https://github.com/PX4/Matrix/commit/03a3e3ad46d21bb90e78f8cedd3526d24617df5f
    - Changes: https://github.com/PX4/Matrix/compare/21d47424c6050bb94da5de3f7580a8df66b6fcc7...03a3e3ad46d21bb90e78f8cedd3526d24617df5f

    03a3e3a 2018-06-09 Daniel Agar - helper_functions add wrap_2pi
abc8f82 2018-06-09 Daniel Agar - travis-ci add codecov.io (#69)

analyse_logdata_ekf:
- add sideslip innovation fail check flag to fix wrongly selected
bits for hagl innovation and optical flow innovations
- plot sideslip innovation fail
- add gps fix type fail flag to fix wrongly selected bits for all
gps check fail flags
- plot gps fix type

    - sitl_gazebo in PX4/Firmware (1b33445c): https://github.com/PX4/sitl_gazebo/commit/e8b3624b9dad63a492ae58c1ce8661488128966b
    - sitl_gazebo current upstream: https://github.com/PX4/sitl_gazebo/commit/59f01ae9bd8ee1937be368f9b536fda02bf1aba6
    - Changes: https://github.com/PX4/sitl_gazebo/compare/e8b3624b9dad63a492ae58c1ce8661488128966b...59f01ae9bd8ee1937be368f9b536fda02bf1aba6

    59f01ae 2018-06-07 Julian Oes - cmake: add tinyxml dependency

    - ecl in PX4/Firmware (f7937d783496e954efc52439148ef66824d9c80a): https://github.com/PX4/ecl/commit/1fdf33b343e361de6410515a0359f3cb7f34d499
    - ecl current upstream: https://github.com/PX4/ecl/commit/d177e96508d2572f6fa8eb7ff41852749c882548
    - Changes: https://github.com/PX4/ecl/compare/1fdf33b343e361de6410515a0359f3cb7f34d499...d177e96508d2572f6fa8eb7ff41852749c882548

    d177e96 2018-06-08 Paul Riseborough - EKF: Fix bug causing slow drift when high rate flow data is used
ee2dc7d 2018-05-30 Paul Riseborough - EKF: Rework optical flow selection logic
e383b6a 2018-05-29 Paul Riseborough - EKF: rework optical flow selection logic
487e6a0 2018-05-28 Paul Riseborough - EKF: enable user selection of auto mag free operation
6bdbe03 2018-05-28 Paul Riseborough - EKF: Fallback to optical flow for all in-flight loss of navigation scenarios
b4d2b8c 2018-05-19 Mohammed Kabir - EKF : introduce new architechture for navigation limits
8a71339 2018-05-19 Paul Riseborough - EKF: Improve ground effect compensation
39697f1 2018-05-18 Paul Riseborough - EKF: rework optical flow switching
1cfe845 2018-05-18 Paul Riseborough - EKF: rework GPS quality check
99a8038 2018-05-18 Paul Riseborough - EKF: improve optical flow GPS quality checking
7f36add 2018-05-18 Paul Riseborough - EKF: scale GPS vertical accuracy check when using optical flow
fc9f532 2018-05-18 Paul Riseborough - EKF: relax range finder data continuity check
93c456f 2018-05-18 Paul Riseborough - EKF: Improve protection against badly conditioned dVel bias covariances
225057a 2018-05-18 Paul Riseborough - EKF: Fix bug preventing use of terrain estimator
adb4a09 2018-05-17 Paul Riseborough - EKF: Fix bug causing large yaw innovations when GPS is lost
f59cd0f 2018-05-16 Paul Riseborough - EKF: Don't make detection of indoor operation dependent on optical flow
1562a82 2018-05-16 Paul Riseborough - EKF: Add parameter to adjust on-ground movement detector sensitivity
ea9e824 2018-05-16 Paul Riseborough - EKF: Improve detection of indoor flight condition
565f992 2018-05-16 Paul Riseborough - EKF: Reduce effect of yaw gyro bias when using optical flow indoors
e10798b 2018-05-16 Paul Riseborough - EKF: Add on ground movement detector
2d3b652 2018-05-15 Paul Riseborough - EKF: Reset yaw gyro bias learning when resuming use of magnetometer
8191068 2018-05-15 Paul Riseborough - EKF: Don't start using mag if optical flow use is interrupted
4889e84 2018-05-15 Paul Riseborough - EKF: Don't fuse multi rotor drag if yaw angle is bad
092a8d8 2018-05-15 Paul Riseborough - EKF: Fix GPS validity time check error
0160aaa 2018-05-15 Paul Riseborough - EKF: Don't use magnetometer with optical flow only nav if GPS checks are failing
8451676 2018-05-14 Paul Riseborough - EKF: Use stricter GPS accuracy test when optical flow is being used
a80b3ab 2018-05-27 Daniel Agar - set MODULE define for each library