Merge branch 'issue/61' into 'master'

Issue #61: Remove verification of empty strings to non-optional strings

See merge request !26

scripts/expenses/insert_expenses.sh

@@ -21,15 +21,15 @@ fi
 source ./config.sh
 
 # Check if all variables in config file are set:
-if [ -z ${index+x} ]; then
+if [ -z ${index} ]; then
     echo "Var 'index' is unset. Set it in file 'scripts/expenses/config.sh'.";
     exit;
 fi
-if [ -z ${host+x} ]; then
+if [ -z ${host} ]; then
     echo "Var 'host' is unset. Set it in file 'scripts/expenses/config.sh'.";
     exit;
 fi
-if [ -z ${columnName+x} ]; then
+if [ -z ${columnName} ]; then
     echo "Var 'host' is unset. Set it in file 'scripts/expenses/config.sh'.";
     exit;
 fi

scripts/travel_allowances/insert_travel_allowances.sh

@@ -20,15 +20,15 @@ fi
 source ./config.sh
 
 # Check if all variables in config file are set:
-if [ -z ${index+x} ]; then
+if [ -z ${index} ]; then
     echo "Var 'index' is unset. Set it in file 'scripts/travel_allowance/config.sh'.";
     exit;
 fi
-if [ -z ${host+x} ]; then
+if [ -z ${host} ]; then
     echo "Var 'host' is unset. Set it in file 'scripts/travel_allowance/config.sh'.";
     exit;
 fi
-if [ -z ${columnName+x} ]; then
+if [ -z ${columnName} ]; then
     echo "Var 'host' is unset. Set it in file 'scripts/travel_allowance/config.sh'.";
     exit;
 fi

scripts/workers/insert_register_payment.sh

@@ -23,15 +23,15 @@ fi
 
 source ./config.sh
 
-if [ -z ${index+x} ]; then
+if [ -z ${index} ]; then
     echo "Var 'index' is unset. Set it in file 'scripts/workers/config.sh'.";
     exit;
 fi
-if [ -z ${host+x} ]; then
+if [ -z ${host} ]; then
     echo "Var 'host' is unset. Set it in file 'scripts/workers/config.sh'.";
     exit;
 fi
-if [ -z ${columnName+x} ]; then
+if [ -z ${columnName} ]; then
     echo "Var 'columnName' is unset. Set it in file 'scripts/workers/config.sh'.";
     exit;
 fi