Merge pull request #262 from coding-for-reproducible-research/color_blind_safe_figures

Remove old non colourblind safe images

Author: liamjberrisford

individual_modules/introduction_to_python/analysis_task_1.ipynb

@@ -314,7 +314,7 @@
     "row 2: ['G', 'H', 'I']. Starting in the upper left hand corner, data[0, 0] = 'A', data[0, 1] = 'B',\n",
     "data[0, 2] = 'C', data[1, 0] = 'D', data[1, 1] = 'E', data[1, 2] = 'F', data[2, 0] = 'G',\n",
     "data[2, 1] = 'H', and data[2, 2] = 'I',\n",
-    "in the bottom right hand corner.](images/python-zero-index.svg)\n",
+    "in the bottom right hand corner.](images/python-zero-index.png)\n",
     "\n",
     "## In the Corner\n",
     "What may also surprise you is that when Python displays an array, it shows the element with index `[0, 0]` in the upper left corner rather than the lower left. This is consistent with the way mathematicians draw matrices but different from the Cartesian coordinates. The indices are (row, column) instead of (column, row) for the same reason, which can be confusing when plotting data.\n",

individual_modules/introduction_to_python/images/python-zero-index.svg

@@ -50,7 +50,7 @@
     "it as a separate timeline of changes that runs in parallel with the main timeline. Each branch contains a copy of the \n",
     "entire codebase, with its own set of changes.\n",
     "\n",
-    "![A Git branch](images/branch.svg)\n",
+    "![A Git branch](images/branch.png)\n",
     "\n",
     "Git branches are incredibly useful for collaborative development, as they allow multiple developers to work on \n",
     "different features or fixes simultaneously, without stepping on each other's toes. They also provide a way to \n",