* changes:
[apps] Add a margin around the window when drawing curves
[apps] Use curve view window in the abstract class curve view
[apps/statistics] Make data model inherit from curve view window
[apps/probability] Make the model law inherit from curve view window
[apps/graph/graph] Make the model graph window inherit from curve view window
[apps] Create an abstract model curve view window
[apps/graph/graph] When redrawing the curve, slightly exceed the rect to ensure the continuity of the curve
[apps/graph/graph] Add a banner view in the graph view
[apps/graph/graph] Create a class banner view
[apps/probability] Add a pointer to the data model in the histogram controller
[apps/probability] Improve data controller to delete pairs of data
[escher] Add a method in even odd editable text cell to access editable text cell
[apps/probability] Add method in data model (to delete pairs)
[escher] Correct syntax error
* changes:
[apps/graph/values] Make values controller inherit from editable cell table view controller
[apps/statistics] Make data controller inherits from editable cell table view controller
[apps] Create a class editable cell table view controller
[apps] Factorize app classes by creating a text field delegate app
[apps/statistics] Use data model to improve data controller
[apps/statistics] Create a model data
[escher] Change even odd editable cell constructor
[apps/graph/value] Use even odd editable pointer cell in values controller instead of title cell
[escher] Add a class even odd pointer text cell
[apps] Use even odd editable text cell in values controller
[escher] Create a even odd editable text cell inheriting from even odd and composing with editable text cell
[apps] add the stat apps in the container
[apps/statistics] Create the structure of the stat apps
[escher] In tab view controller, enable a fourth tab
[escher] In tab view controller, implement lazy loaded for tab titles
[apps/probability] Draw continuously law curves
[apps/probability] Color the integral under the curve
[apps/probability] Correct dirtyness and layout order
[apps] Enable to color under curves in curve view
[apps] In curve view, add a boolean to decide whether to shift the origin label
[apps/probability] Tidy calculation subclasses in a folder
[apps/probability] Cap the number of operations
[apps/probability] Handle edge case
[liba] add constant INFINITY
[apps/probability] Change Calculation API (adding heritage)
[apps/probability] Handle integral calculations
[apps/probability] Display an error modal when the parameter is out of the domain
[apps/probability] Improve law density window
[apps/probability] Compute binomial law in a way to avoid to big integer
[apps/probability] Draw histograms for discrete laws
[apps] Correct errors in curve view
[apps/probability] Improve law models
[apps/probability] Delete local context
[liba] Add expf and lgammaf to the math library
