examples: fix a bug with decimals in calculator

Signed-off-by: Romain Chanoir <chanoir.romain@courrier.uqam.ca>
examples: fix grid size for buttons in calculator

Signed-off-by: Romain Chanoir <chanoir.romain@courrier.uqam.ca>
examples: improves decimal display in calculator

Signed-off-by: Romain Chanoir <chanoir.romain@courrier.uqam.ca>
examples: adds a 'C' button to the calculator

Signed-off-by: Romain Chanoir <chanoir.romain@courrier.uqam.ca>
examples: fix the display of "," when there are no decimals

Signed-off-by: Romain Chanoir <chanoir.romain@courrier.uqam.ca>
examples: adds tests for the 'C' button and multiple decimals in the calulator

Signed-off-by: Romain Chanoir <chanoir.romain@courrier.uqam.ca>
examples : fix bug with C > 0 > . > 0 > 0 > 0 > 0 > 1

Signed-off-by: Romain Chanoir <chanoir.romain@courrier.uqam.ca>
examples : adds the disabling  of "." button in calculator

Signed-off-by: Romain Chanoir <chanoir.romain@courrier.uqam.ca>
gitk3_4 : Adds methods "set_sensitive" and "get_sensitive" to gtk

Signed-off-by: Romain Chanoir <chanoir.romain@courrier.uqam.ca>
gitk3_4 : rename getter and setter of sensitive

Signed-off-by: Romain Chanoir <chanoir.romain@courrier.uqam.ca>
examples : fix a bug when clicking on the "." button directly

Signed-off-by: Romain Chanoir <chanoir.romain@courrier.uqam.ca>
gtk3_4 : adds commentary to add method in GtkContainer

Signed-off-by: Romain Chanoir <chanoir.romain@courrier.uqam.ca>
gtk3_4 : Add method remove_widget to GtkContainer

Signed-off-by: Romain Chanoir <chanoir.romain@courrier.uqam.ca>
gtk3_4 : Add getter for resize_mode in GtkContainer

Signed-off-by: Romain Chanoir <chanoir.romain@courrier.uqam.ca>
gtk3_4 : Add setter for resize_mode in GtkContainer

Signed-off-by: Romain Chanoir <chanoir.romain@courrier.uqam.ca>
gtk3_4 : Add get_child_at(left, top) in GtkGrid

Signed-off-by: Romain Chanoir <chanoir.romain@courrier.uqam.ca>
gtk3_4 : Add insert_row and insert_column methods to GtkGrid

Signed-off-by: Romain Chanoir <chanoir.romain@courrier.uqam.ca>
gtk3_4: Add getters and setter for the visibility of a widget

Signed-off-by: Romain Chanoir <chanoir.romain@courrier.uqam.ca>
src: remove check_init_instance everywhere

Signed-off-by: Jean Privat <jean@pryen.org>
tests: update related to the removal of check_init_instance

Signed-off-by: Jean Privat <jean@pryen.org>