feat: Enhance Governance Controller and Proposal Handling

- Improve proposal search to include description field: This
  allows for more comprehensive search results.
- Fix redirect after voting: The redirect now correctly handles
  the success message.
- Handle potential invalid timestamps in ballots: The code now
  gracefully handles ballots with invalid timestamps, preventing
  crashes and using the current time as a fallback.
- Add local time formatting function:  This provides a way to
  display dates and times in the user's local timezone.
- Update database path: This simplifies the database setup.
- Improve proposal vote handling: Addresses issues with vote
  submission and timestamping.
- Add client-side pagination and filtering to proposal details:
  Improves user experience for viewing large vote lists.

actix_mvc_app/src/utils/mod.rs

@@ -30,6 +30,7 @@ impl std::error::Error for TemplateError {}
 pub fn register_tera_functions(tera: &mut tera::Tera) {
     tera.register_function("now", NowFunction);
     tera.register_function("format_date", FormatDateFunction);
+    tera.register_function("local_time", LocalTimeFunction);
 }
 
 /// Tera function to get the current date/time
@@ -93,6 +94,52 @@ impl Function for FormatDateFunction {
     }
 }
 
+/// Tera function to convert UTC datetime to local time
+#[derive(Clone)]
+pub struct LocalTimeFunction;
+
+impl Function for LocalTimeFunction {
+    fn call(&self, args: &std::collections::HashMap<String, Value>) -> tera::Result<Value> {
+        let datetime_value = match args.get("datetime") {
+            Some(val) => val,
+            None => return Err(tera::Error::msg("The 'datetime' argument is required")),
+        };
+
+        let format = match args.get("format") {
+            Some(val) => match val.as_str() {
+                Some(s) => s,
+                None => "%Y-%m-%d %H:%M",
+            },
+            None => "%Y-%m-%d %H:%M",
+        };
+
+        // The datetime comes from Rust as a serialized DateTime<Utc>
+        // We need to handle it properly
+        let utc_datetime = if let Some(dt_str) = datetime_value.as_str() {
+            // Try to parse as RFC3339 first
+            match DateTime::parse_from_rfc3339(dt_str) {
+                Ok(dt) => dt.with_timezone(&Utc),
+                Err(_) => {
+                    // Try to parse as our standard format
+                    match DateTime::parse_from_str(dt_str, "%Y-%m-%d %H:%M:%S%.f UTC") {
+                        Ok(dt) => dt.with_timezone(&Utc),
+                        Err(_) => return Err(tera::Error::msg("Invalid datetime string format")),
+                    }
+                }
+            }
+        } else {
+            return Err(tera::Error::msg("Datetime must be a string"));
+        };
+
+        // Convert UTC to local time (EEST = UTC+3)
+        // In a real application, you'd want to get the user's timezone from their profile
+        let local_offset = chrono::FixedOffset::east_opt(3 * 3600).unwrap(); // +3 hours for EEST
+        let local_datetime = utc_datetime.with_timezone(&local_offset);
+
+        Ok(Value::String(local_datetime.format(format).to_string()))
+    }
+}
+
 /// Formats a date for display
 #[allow(dead_code)]
 pub fn format_date(date: &DateTime<Utc>, format: &str) -> String {