Minor bug fix and code arrangement
Update side bar when changing  visibility
Change description in the zoom in/out buttons
Add action to select when the result should appear in a new window and minor fixes in variables names
Merge branch 'dev_modules_api' into jc-dev
Add new icons to the window menu and a new action to select the windows
to be syncronized played
Add new class to define the dialog box to select sub windows from the list
Initial code is introduced and added to the main app for debug purposes
Set stream as NULL until load a file in SubWindowHandle
Structure of the dialog box created. Missing the functionality
Define the initial pixel format to YUV420p
Merge branch 'master' into dev_DialogWindowSelector
Improve input args parser to support multiple inputs
Merge branch 'master' into dev_DialogWindowSelector
Add the behaviour of the dialog: add and remove sub windows from a list
Incorporate the DialogSubWindowSelector into the main app
Add function to return the max number of frames of the sequences in the display list
Add repeat and video lock to settings
Merge master into dev_DialogWindowSelector
merge dialog box to select sub windows into master
Merge branch 'master' into dev_DialogWindowSelector