Fix up string punctuation

Full sentences should end with a full stop. Sometimes it makes sense
not to e.g. in a header but for things like error messages, I think
it's better to be consistent. Otherwise we end up with needless
duplicates like "There are currently no parameters to configure in this
section." and "There are currently no parameters to configure in this
section".

Also, add a 'description' for a particular string (Add a Plan Name) as
without context it is not obvious what it refers to (e.g. a
button/action vs a form field tooltip).

Change-Id: Iade1dfdf4d251bb85ef8a6f95180cdb90195f065

src/js/components/Login.js

@@ -20,7 +20,7 @@ const messages = defineMessages({
   },
   usernameRequired: {
     id: 'Login.usernameRequired',
-    defaultMessage: 'Username is required'
+    defaultMessage: 'Username is required.'
   },
   password: {
     id: 'Login.password',
@@ -28,7 +28,7 @@ const messages = defineMessages({
   },
   passwordRequired: {
     id: 'Login.passwordRequired',
-    defaultMessage: 'Password is required'
+    defaultMessage: 'Password is required.'
   },
   login: {
     id: 'Login.login',

src/js/components/deployment/DeploymentConfirmation.js

@@ -29,7 +29,7 @@ const messages = defineMessages({
   },
   validationsWarningTitle: {
     id: 'DeploymentConfirmation.validationsWarningTitle',
-    defaultMessage: 'Not all pre-deployment validations have passed'
+    defaultMessage: 'Not all pre-deployment validations have passed.'
   },
   validationsWarningMessage: {
     id: 'DeploymentConfirmation.validationsWarningMessage',

src/js/components/deployment/StackResourcesTable.js

@@ -16,7 +16,7 @@ const messages = defineMessages({
   },
   noResourcesAvailable: {
     id: 'StackResourcesTable.noResourcesAvailable',
-    defaultMessage: 'There are no Resources available'
+    defaultMessage: 'There are no Resources available.'
   },
   name: {
     id: 'StackResourcesTable.name',

src/js/components/environment_configuration/EnvironmentGroup.js

@@ -8,7 +8,7 @@ import GroupedCheckBox from '../ui/forms/GroupedCheckBox';
 const messages = defineMessages({
   requiredEnvironments: {
     id: 'EnvironmentGroup.requiredEnvironments',
-    defaultMessage: 'This environment requires {requiredEnvironments}'
+    defaultMessage: 'This environment requires {requiredEnvironments}.'
   }
 });
 

src/js/components/parameters/ParameterInput.js

@@ -10,7 +10,7 @@ import HorizontalStaticText from '../ui/forms/HorizontalStaticText';
 const messages = defineMessages({
   enterValidJson: {
     id: 'ParameterInput.enterValidJson',
-    defaultMessage: 'Please enter a valid JSON string'
+    defaultMessage: 'Please enter a valid JSON string.'
   }
 });
 

src/js/components/parameters/ParameterInputList.js

@@ -8,7 +8,7 @@ import ParameterInput from './ParameterInput';
 const messages = defineMessages({
   noParameters: {
     id: 'ParameterInputList.noParameters',
-    defaultMessage: 'There are currently no parameters to configure in this section'
+    defaultMessage: 'There are currently no parameters to configure in this section.'
   }
 });
 

src/js/components/plan/ListPlans.js

@@ -38,7 +38,7 @@ const messages = defineMessages({
   },
   noPlans: {
     id: 'ListPlans.noPlans',
-    defaultMessage: 'There are currently no plans'
+    defaultMessage: 'There are currently no plans.'
   },
   createNewPlan: {
     id: 'ListPlans.createNewPlan',

src/js/components/plan/PlanFormTabs.js

@@ -10,7 +10,8 @@ import PlanUploadTypeRadios from './PlanUploadTypeRadios';
 const messages = defineMessages({
   addPlanName: {
     id: 'PlanFormTabs.addPlanName',
-    defaultMessage: 'Add a Plan Name'
+    defaultMessage: 'Add a Plan Name',
+    description: 'Tooltip for "Plan Name" form field'
   },
   newPlan: {
     id: 'PlanFormTabs.newPlan',
@@ -30,7 +31,7 @@ const messages = defineMessages({
   },
   planNameValidationError: {
     id: 'PlanFormTabs.planNameValidationError',
-    defaultMessage: 'Please use only alphanumeric characters and -'
+    defaultMessage: 'Please use only alphanumeric characters and hyphens (-).'
   },
   uploadType: {
     id: 'PlanFormTabs.uploadType',