Csm improvements (#295)

* paa exclude csm and AM definition

* tm review reinsurance + fix typo in test

* clean ups

* clean up TechnicalMargin and refactor TMtest

* doc + sketch proj

* align to prevent conflicts

* reset changes

* PR improvements

ifrs17-template/PracticalUseCases/ActualsOutsideThePeriod/ActualsUseCaseReports.ipynb

@@ -35,7 +35,7 @@
                 "\n",
                 "\nIn this case study we look at the effects of cashflows happening outside the expected reporting period, also referred to as Payables and Receivables in accounting language. The reconciliation between the written and effective cashflows is usually handled by the Actuals. This reconciliation must be taken into account, since the IFRS 17 Standard requires insurance liabilities to be measured according to the effective cashflows.",
                 "\n",
-                "\nWe can try to summarize the the cases for In Advance and Overdue actuals in a table. On the colums we define the due date of the payments in relation to the reporting period, and in the rows we define the effective date of the payments in relation to the reporting period. If we exclude the write off (WO) for now, we are left we the following possibilities:",
+                "\nWe can try to summarize the cases for In Advance and Overdue actuals in a table. On the colums we define the due date of the payments in relation to the reporting period, and in the rows we define the effective date of the payments in relation to the reporting period. If we exclude the write off (WO) for now, we are left with the following possibilities:",
                 "\n",
                 "\n<br>",
                 "\n",
@@ -481,7 +481,7 @@
         {
             "cell_type": "markdown",
             "source": [
-                "We are introducing In Advance and Overdue reserves for the scenarios described above (CF_A and CF_O cases in the table above), and it is important to note the sign convention (Receivables bear a negative sign, while Payables a positive sign). This convention becomes relavent when determining the Liability of Remaining Coverage below, as it will bring the LRC to either to a more Asset-like character (negative) or Liability-like character (positive)."
+                "We are introducing In Advance and Overdue reserves for the scenarios described above (CF_A and CF_O cases in the table above), and it is important to note the sign convention (Receivables bear a negative sign, while Payables a positive sign). This convention becomes relavent when determining the Liability of Remaining Coverage below, as it will bring the LRC to either a more Asset-like character (negative) or a more Liability-like character (positive)."
             ],
             "metadata": {},
             "execution_count": 0,