Chore: Removed @angular/flex-layout and replaced it with tailwind.

Chore: Upgraded some packages

overlord/src/app/period/period-detail/period-detail.component.html

@@ -3,9 +3,9 @@
     <mat-card-title>Period</mat-card-title>
   </mat-card-title-group>
   <mat-card-content>
-    <form [formGroup]="form" fxLayout="column">
-      <div fxLayout="row">
-        <mat-form-field fxFlex>
+    <form [formGroup]="form" class="flex flex-col">
+      <div class="flex flex-row justify-around content-start items-start">
+        <mat-form-field class="flex-auto">
           <input
             matInput
             [matDatepicker]="validFrom"
@@ -17,8 +17,8 @@
           <mat-datepicker #validFrom></mat-datepicker>
         </mat-form-field>
       </div>
-      <div fxLayout="row">
-        <mat-form-field fxFlex>
+      <div class="flex flex-row justify-around content-start items-start">
+        <mat-form-field class="flex-auto">
           <input
             matInput
             [matDatepicker]="validTill"

overlord/src/app/period/period.module.ts

@@ -1,7 +1,6 @@
 import { CdkTableModule } from '@angular/cdk/table';
 import { CommonModule } from '@angular/common';
 import { NgModule } from '@angular/core';
-import { FlexLayoutModule } from '@angular/flex-layout';
 import { ReactiveFormsModule } from '@angular/forms';
 import { MomentDateAdapter } from '@angular/material-moment-adapter';
 import { MatButtonModule } from '@angular/material/button';
@@ -43,7 +42,6 @@ export const MY_FORMATS = {
   imports: [
     CommonModule,
     CdkTableModule,
-    FlexLayoutModule,
     MatTableModule,
     MatPaginatorModule,
     MatSortModule,