Add development testing environment

Templates (8 basic templates):
- base.html: Main layout with navigation, flash messages, responsive design
- login.html: User login form with remember me option
- register.html: User registration with validation
- dashboard.html: Main dashboard with statistics cards and recent activity
- players_list.html: Players list placeholder
- add_player.html: Add player form
- groups_list.html: Groups list placeholder
- create_group.html: Create group form
- content_list.html: Content list placeholder
- upload_content.html: File upload form
- admin.html: Admin panel with system overview

Development Setup:
- run_dev.sh: Automated development server setup script
  - Creates virtual environment
  - Installs dependencies
  - Initializes database
  - Creates default admin user (admin/admin123)
  - Runs Flask development server on port 5000

Static Files:
- static/uploads/ directory with .gitkeep
- Ready for media file uploads

Testing Features:
✅ Basic navigation and routing
✅ Authentication flow (login/register/logout)
✅ Dashboard with statistics
✅ Flash message system
✅ Responsive design with clean UI
✅ Placeholder templates for all routes

Ready for manual testing at http://localhost:5000

app/templates/dashboard.html

@@ -0,0 +1,69 @@
+{% extends "base.html" %}
+
+{% block title %}Dashboard - DigiServer v2{% endblock %}
+
+{% block content %}
+<h1 style="margin-bottom: 2rem;">Dashboard</h1>
+
+<div style="display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 1rem; margin-bottom: 2rem;">
+    <div class="card">
+        <h3 style="color: #3498db; margin-bottom: 0.5rem;">👥 Players</h3>
+        <p style="font-size: 2rem; font-weight: bold;">{{ total_players or 0 }}</p>
+        <a href="{{ url_for('players.players_list') }}" class="btn" style="margin-top: 1rem;">View Players</a>
+    </div>
+    
+    <div class="card">
+        <h3 style="color: #9b59b6; margin-bottom: 0.5rem;">📁 Groups</h3>
+        <p style="font-size: 2rem; font-weight: bold;">{{ total_groups or 0 }}</p>
+        <a href="{{ url_for('groups.groups_list') }}" class="btn" style="margin-top: 1rem;">View Groups</a>
+    </div>
+    
+    <div class="card">
+        <h3 style="color: #e67e22; margin-bottom: 0.5rem;">🎬 Content</h3>
+        <p style="font-size: 2rem; font-weight: bold;">{{ total_content or 0 }}</p>
+        <a href="{{ url_for('content.content_list') }}" class="btn" style="margin-top: 1rem;">View Content</a>
+    </div>
+    
+    <div class="card">
+        <h3 style="color: #27ae60; margin-bottom: 0.5rem;">💾 Storage</h3>
+        <p style="font-size: 2rem; font-weight: bold;">{{ storage_mb or 0 }} MB</p>
+        <a href="{{ url_for('content.upload_content') }}" class="btn btn-success" style="margin-top: 1rem;">Upload Content</a>
+    </div>
+</div>
+
+<div class="card">
+    <h2>Quick Actions</h2>
+    <div style="display: flex; gap: 1rem; flex-wrap: wrap; margin-top: 1rem;">
+        <a href="{{ url_for('players.add_player') }}" class="btn btn-success">➕ Add Player</a>
+        <a href="{{ url_for('groups.create_group') }}" class="btn btn-success">➕ Create Group</a>
+        <a href="{{ url_for('content.upload_content') }}" class="btn btn-success">⬆️ Upload Content</a>
+        {% if current_user.is_admin %}
+            <a href="{{ url_for('admin.admin_panel') }}" class="btn">⚙️ Admin Panel</a>
+        {% endif %}
+    </div>
+</div>
+
+{% if recent_logs %}
+<div class="card">
+    <h2>Recent Activity</h2>
+    <div style="margin-top: 1rem;">
+        {% for log in recent_logs %}
+        <div style="padding: 0.5rem; border-bottom: 1px solid #eee;">
+            <span style="color: {% if log.level == 'error' %}#e74c3c{% elif log.level == 'warning' %}#f39c12{% else %}#27ae60{% endif %}; font-weight: bold;">
+                [{{ log.level.upper() }}]
+            </span>
+            {{ log.message }}
+            <small style="color: #7f8c8d; float: right;">{{ log.timestamp.strftime('%Y-%m-%d %H:%M:%S') }}</small>
+        </div>
+        {% endfor %}
+    </div>
+</div>
+{% endif %}
+
+<div class="card">
+    <h2>System Status</h2>
+    <p>✅ All systems operational</p>
+    <p>🔄 Blueprint architecture active</p>
+    <p>⚡ Flask {{ config.get('FLASK_VERSION', '3.1.0') }}</p>
+</div>
+{% endblock %}